Question

If a sprinkler waters 1/15 of lawn in 1/5 of an hour how much time will it take to water the entire lawn ?

Answer 1

3 hours.

Explanation:

1/15 of the lawn is watered in 1/5 hours

So the whole lawn is watered in 15 * 1/5

= 3 hours.

Answer 2

3 hours

Explanation:

1/5 of an hour would be equivalent to 12 minutes (60 minutes in an hour divided by 5)

Multiply 12 minutes by 15 to see how long it will take to water the entire lawn in minutes ----> 12x15=180

Divide 180 by 60 to see how many hours it takes ---> 180/60=3