Question

Im really bad at word problems can anyone help ??? Tryna graduate

Answer 1

Let Hong lives at a distance of d miles from mountains .

We have to use the formula of speed, distance and time, which is

$speed= \frac{distance}{time}$

On droving to the mountain,

$speed = \frac{d}{10}miles/hour$

On droving back to home,

$speed =\frac{d}{7}miles/hout$

The difference between the two speeds = 18miles per hour, that is

$\frac{d}{7}- \frac{d}{10}=18$

$3d = 18*70$

$d = 420 miles$