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*\frac{1hour}{78miles}$$\frac{13}{78}hours$

notice how the units 'miles' are cancelled

then

$\frac{13}{78}=0.1666$

then rounded to the nearest tenth

Cher takes 0.2 hours to travel 13 miles