Question

Nadia takes 6 8/9 minutes to drive to her local shopping center from her home. She spends 1/7 of this time waiting at traffic lights. Find the number of minutes she spends waiting .

Answer 1

She spends 0.98 min, that is, aprroximately 1 min waiting at traffic lights.

Explanation:

The length of the drive is 6 8/9 minutes

As a fraction, this is:

`6 + (8)/(9) = (62)/(9)`

She spends 1/7 of this time waiting at traffic lights.

This is 1/7 of 62/9. So

Time waiting:

`t = (62)/(9) * (1)/(7) = (62)/(63) = 0.98`

She spends 0.98 min, that is, aprroximately 1 min waiting at traffic lights.