EASY
Earn 100

A and B can do a work in 3 days and B alone can do it in4 days. In how many days A alone will finish the work.

50% studentsanswered this correctly

Important Questions on Ratio and Proportion

MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A group of soldiers can completely destroy an enemy camp in 5 days. However, 9 soldiers were injured. The remaining soldiers destroyed the camp in 8 days. Calculate the actual number of soldiers who destroyed the camp?
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
4 men and 3 women finish a job in 6 days, and 5 men and 7 women can do the same job in 4 days. How long will 1 man and 1 woman take to do the work?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A works twice as fast as B . If B can complete a piece of work independently in 12 days, then what will be the number of days taken by A and B together to finish the work?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work

G is twice as fast as S in doing work. If G can do a work in 30 days less than S, how many days will they take to complete the work together? 

1. 25
2. 20
3. 22
4.15 

MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
12 men can finish a piece of work in 20 days. 8 men started working and after 10 days were replaced by 18 women. These 18 women finish the remaining work in 16 days. In how many days 18 women can finish the whole work?
HARD
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A and B can do a job together in 12 days. A is 2 times as efficient as B. In how many days can B alone complete the work?
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A, B, C each working alone, can finish a piece of work in 27,33,45 days respectively. A starts the work by working alone for 12 days, then B takes over from A and works for 11 days. At this stage C takes works from B and completes the remaining work. In how many days was the whole work completed?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
20 dogs can eat 20 hens in 10 days. In how many days 40 dogs eat 40 such hens?
HARD
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A can do a work in 24 days, B is 20% more efficient than A, if C can do the work in 10 more days than B, find days taken by A and C together to complete the work.
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
20 men can complete a piece of work in 16 days. After 5 days from the start of the work, some men left. If the remaining work was completed by the remaining men in 1813 days, how many men left after 5 days from the start of the work?
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A and B can complete a piece of work in 6 and 12 days separately. If they work jointly, how long will they take to complete this piece of work ?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
If 7 boys and 2 men were working together can do 3 times as much work per hour as a boy and a man together, what will be the ratio of work done by a boy and a man for the given time?
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
10 persons can build a wall in 8 days. How may persons can build the wall in half day ?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A is twice as good a workman as B and together, they finish a piece of work in 14 days. The number of days taken by A alone to finish the work is:
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
Deepa and Seema together do a work in 6 days. Deepa can complete the same work alone in 9 days. In how many days will Seema complete the work alone ?
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A,B, and C together complete a work in 2 days. If A and B need 2.4 days to complete the work, while B and C together complete the work in 4 days then in how many days will B alone do the work?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
Ratio of days required by A and B to complete some work is 3:5. They require 558 days to complete the work. In how many days can A alone complete twice the work?
MEDIUM
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work

A and B working alone can do a work in 20 days and 15 days respectively. They started the work together but B left after sometime and A finished the remaining work in 6 days. Find after how many days from start B left the work?

EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
A can do a piece of work in 8 days which B can destroy in 3 days. A has worked for 6 days, during the last 2 days of which B has been destroying. How many days must A now work alone to complete the work?
EASY
Test of Numerical Ability>Arithmetic>Ratio and Proportion>Time and Work
28 men can complete a piece of work in 15 days and 15 women can complete the same piece of work in 24 days. What is the respective ratio between the amount of work done by 30 men in 1 day and the amount of work done by 18 women in 1 day?