Unitary Method

If the answer is $X$ rupees, then write the value $X$ in the given box.

$21$people start digging a pond. They decide to finish the work in $40$days. But as $7$ people have fallen ill, how long will it take to finish the work?

If the answer is $X$ rupees, then write the value $X$ in the given box.

If the answer is $X$ days, then write the value $X$ in the given box.

If the answer is $X$ Rs, then write the value $X$ in the given box.

$30$ persons take $12$ days to make a machine. If the work has to be finished in $20$ days, then how many people will be needed?

A goods train travels $80$ km in $240$ min. If the goods train travels at the same speed, how much time will take to reach a distance of $60$ km?

Murshid is going to his maternal uncle's place in a bus. If the speed of the bus is $40 \mathrm{km}/\mathrm{hr}$, he will take $3$ hours to reach. But the bus is going at a speed of $60 \mathrm{km}/\mathrm{hr}$. How much time will he need to reach?

In a hostel there were $30$ students. Food to be consumed by these students in $20$ days was stored. But then, $6$ new students came to stay at the hostel. Now how many days will the food last for them?

In my locality $12$ people have taken $15$ days to clean the irrigation canal. How many days would have been needed if $20$ people had worked on cleaning it?

$6$ ploughs are needed to till a piece of land in $4$ days. How many days will be needed to till the land with $1$ plough?

$12$ persons take $21$ days to repair a road. How many people will be needed to repair the road in $1$ day?

$5$ people have taken $4$ days to clean the village pond. How many days would $1$ person take to clean that pond?

How many days will $1$ person take to consume the amount of food that $5$ people consume in $10$ days?

$4$ ploughs are needed to till a piece of land in $5$ days. How many days will be needed to till the same piece of land with $1$ plough?

We need to build walls all around our house. $3$ workers were employed to do the job. These $3$ workers will take $6$ days to build the walls. But only $1$ worker joins. The rest didn't turn up. Then in how many days the work will finish?

Yasin buys $1000 \mathrm{gm}$ of tea for $\mathrm{Rs}.200$. How much tea can she buy for $\mathrm{Rs}.50$?

Pranab gives $\mathrm{Rs}.4$ as fare to travel $1000 \mathrm{m}$ in bus. How far can he travel, paying a fare of $\mathrm{Rs}.5$?

Nazia has $\mathrm{Rs}.50$. She pays $\mathrm{Re}.1$ to buy $2$ biscuits. How many biscuits can she buy with $\mathrm{Rs}.50$?

For $\mathrm{Rs}.16, 500 \mathrm{gm}$ of sugar can be bought. What is the cost of $1 \mathrm{kg}$ of sugar?