Question

Cher travels 78 miles per hour. How long does it take her to travel 13miles? Your answer should be in hours, accurate to at least the nearesttenth.

Answer 1

Cher travels 78 miles per hour

this means in

1 hour se has travel 78 miles

13 miles of travel to hours is given by

`13miles*(1hour)/(78miles)`
`(13)/(78)hours`

notice how the units 'miles' are cancelled

then

`(13)/(78)=0.1666`

then rounded to the nearest tenth

Cher takes 0.2 hours to travel 13 miles