Question

Olive walks at a rate of 4 miles per hour. She lives 2 miles from the news station.How long would it take her to walk home from the news station ?

Answer 1

4/1 = 2/x...4 miles to 1 hr = 2 miles to x hrs
cross multiply because this is a proportion
(4)(x) = (1)(2)
4x = 2
x = 2/4 reduces to 1/2...so she can walk 2 miles in 1/2 hr (or 30 minutes)

Answer 2

In 30 minutes she will get to the train staion