Question

There are three cans. One of them holds exactly 10 litres of milk and is full. The other two cans can hold 7 litres and 3 litres respectively. There is no graduation mark for on the cans. A customer asks for 5 litres of milk. How would you give him the amount he asks? He will not be satisfied with eye estimates

Answer 1

Hey mate hope this helps!!
See it's easy.
The costomer wants 5L of milk, so what we will do is to take that can which hold a 10L of milk and pour it in the third can which contains 3L of milk so 3+2=5.

Answer 2

Answer and Explanation:

Given : There are three cans. One of them holds exactly 10 litres of milk and is full. The other two cans can hold 7 litres and 3 litres respectively. There is no graduation mark for on the cans. A customer asks for 5 litres of milk.

To find : How would you give him the amount he asks?

Solution :

Distributing 10 liter of  milk though 7 liter and 3 liter cans such that it measure 5 liters.

First take 10 liter of milk and pour into 3 liter can 3 times.

There is 9 liter of milk and 1 liter of milk left keep it separately.

Then, Take 9 liter of milk and pour into 7 liter can.

There is 7 liter of milk and 2 liter of milk will remain.

Then, Take 7 liter of milk and pour into 3 liter of can.

There is 3 liter of milk and 4 liter of milk remain left and keep aside.

Now, Add 4 liter left milk and 1 liter left milk we get 5 liter of milk.

In the above way customer get the 5 liter of milk.