Question

Rachel finished 3/4 of the race in 6 hours. How long was the entire race?

Answer 1

8 hours if you divide 6 by 3 you will get 2 then add 2 hours to 6 hoursand you will get 8 hours

Answer 2

3/4 of the race in 6 hrs 
6 divided by 3 equals 2 
so 1/4 is 2 hrs, 2/4 is 4 hrs, 3/4 is 6 hrs which means 4/4 the whole race would be 8 hrs 
4 multiplied by 2 would give you 8 
so the entire race was (8 hours long)