Question

Sally takes 2 5/6 minutes to drive from her home to the local shopping center. She spends 1/5 of this time waiting at traffic lights. Find the number of minutes she spends waiting.

Answer 1

`(17)/(30)` minutes.

Explanation:

It is given that Sally takes
`2(5)/(6)` minutes to drive from her home to the local shopping center.

`2(5)/(6)=(2(6)+5)/(6)`

`2(5)/(6)=(12+5)/(6)`

`2(5)/(6)=(17)/(6)`

She spends 1/5 of this time waiting at traffic lights.

Waiting time in traffic
`=(17)/(6)* (1)/(5)`

`=(17)/(30)`

Therefore, waiting time is
`(17)/(30)` minutes.