Question

A person can mow his lawn in 10 hours. After 2 hours it began to rain. Find the unmoved part of the lawn.

Answer 1

The unmowed part of the lawn is 80%.

Given data :

Person can mow the total lawn in 10 hours.

Work done = 2 hours

So,

In 10 hours he can mow = 100%

In 1 hour he can mow = 100%/10

In 2 hour he can mow = 10% × 2 = 20%

So,the remaining part of lawn = (100-20) = 80% (Answer)