Question

Claire mowed 4 lawns last week. She mowed each lawn in startfraction 7 over 27 endfraction hour. She mowed the same lawns this week in startfraction 5 over 27 endfraction hour each using her new lawn mower. How many times longer was​ claire's time to mow all the lawns last week than this​ week?

Answer 1

Claire's time to mow all the lawns last week was 1.4 times longer than this week.

Step-by-step explanation

Claire mowed each lawn in
`(7)/(27)` hour last week.

So, the total time taken to mow all 4 lawns last week
`=(7)/(27)*4=(28)/(27)` hours.

She mowed the same lawns this week and took
`(5)/(27)` hour for each.

So, the total time taken to mow all 4 lawns this week
`=(5)/(27)*4=(20)/(27)` hours.

Now.....

(Total time in last week / Total time in this week)
`=(((28)/(27)))/(((20)/(27))) = (28)/(20)=(7)/(5)=1.4`

So, Claire's time to mow all the lawns last week was 1.4 times longer than this week.