
Two men and a woman are entrusted with a task. The second man needs three hours more to cope with the job than the first man and the woman would need working together. The first man, working alone, would need as much time as the second man and the woman working together. The first man, work- ing alone, would spend eight hours less than the double period of time the second man would spend working alone. How much time would the two men and the woman need to complete the task if they all worked together?


Important Questions on Time and Work

A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
If the king makes a decision error, the maximum reduction in the time of resistance could be

A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
If the king estimates that the attackers can last for only months, what should the king do to ensure victory?
A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
If a reduction in the ration allocation by reduces the capacity of any soldier to hold off the enemy by , the number of whole months by which the king can increase the life of the resistance by reducing the ration allocation by is
A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
The minimum amount of grain that should be available in the granary to ensure that the fort is not lost (assuming the estimate of the king of months being the duration for which the enemy can last is correct) is
A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
If the king made the worst possible selection of his soldiers to offer the resistance, the percentage increase in the minimum amount of grain that should be available in the granary to ensure that the fort is not lost is
A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
The difference in the minimum grain required for the second worst choice and the worst choice to ensure that the resistance lasts for months is
A fort contains a granary, that has tons of grains. The fort is under the siege from an enemy army that has blocked off all the supply routes.
The army in the fort has three kinds of soldiers:
Sepoys
Mantris
Footies
sepoys can hold of the enemies for one month.
mantris can hold of the enemy for days.
footies can hold of the enemy for one month
A sepoy eats of food per month, a mantri eats of food per month and a footie eats of food. (Assume )
The king has to make some decisions based on the longest possible resistance that can be offered to the enemy.
If a king select a soldier, he will have to feed him for the entire period of the resistance. The king is not obliged to feed a soldier not selected for the resistance.
(Assume that the entire food allocated to a particular soldier for the estimated length of resistance is redistributed into the king's palace in case a soldier dies and available for other soldiers.)
If the king strategically attacks the feeder line on the first day of the resistance so that the grain is no longer a constraint, the maximum time for which the resistance can last is