this is my question

Question

Two friends live 15 miles apart. One day, they decide to jog and meet each other. Tanya leaves her house and heads east, jogging at a rate of 2.5 miles per hour. At the same time Kelly leaves her house and heads west, jogging at a rate of 3.5 miles per hour. How long does it take for the two to meet?

Answer 1

Well, Rin, each hour, Tanya runs 2.5h miles and Kelly runs 3.5h miles, right? Meeting somewhere in between, they will have, together, run a toal of 15 miles.

 

2.5h + 3.5h = 15

6h = 15

h = 2.5

 

They will meet in 2.5 hours.