Question

It took Jackie two hours to mow the lawn period two weeks later, it took her 1 1/2 hours to mow the lawn. What can be said about the amount of power used by Jackie the second time she mowed the lawn.

Answer 1

The amount of power used by Jackie the second time she mowed the lawn was more

Explanation:

`Power = (Work)/(Time)`

Since power is inversely proportional to time

So, The less time will be taken the more power will be used

In first case to complete 1 work Jackie two hours

In second case After two weeks to complete 1 work Jackie took
`(3)/(2) =1.5` hours

Since in second case it took less hours than the first case

Since less the time more the power used

So, the amount of power will be used more in the second case in the second case the time taken was less.

Hence the amount of power used by Jackie the second time she mowed the lawn was more