Question

I have been stuck on this question and i would like to know how to solve it ?

A mother horse and a baby horse walk 10 miles from point A to point B. The mother’s speed is 10 miles per hour and the baby’s 5 miles per hour. The mother rests for 2 minutes after every x minutes of walking. The baby keeps walking. They arrive together at the destination. Find the range of x.

Answer 1

Find the actual walking time of Mama
= 1 hr
then
Mama spends a total of 1 hr not walking
Not walking time = walking time
therefore
After two min of walking (x), she rests two minutes
x = 2