5 dogs can eat 5 biscuits in 5 minutes. In how many

Solution

It takes 5 dogs to eat 5 biscuits in 5 minutes So we have to calculate the rate in which 1 dog can eat 1 biscuit. 1 dog will need (5 x 5 = 25)  minutes   to consume the 5 biscuits So 1 dog will consume 1 biscuit in (25/5) = 5 minutes So in 1 minute the dog consumes (1/5) of the biscuit. Now 10 dogs can consume at the rate of (10 x (1/5)) = 2 biscuit per minute. Number of biscuits to be consumed by the 10 dogs = 10 Time taken = (10/2) = 5 minutes.