math
posted by milan .
michelle went on a 24mile bike ride by lunchtime, they had ridden 5/8 of the total distance.How many miles did they have left to ride after lunch.

Let d = the final distance.
5/8d = 24
d = 24 divided by 5/8
Solve for d.
If you post your answer, we'll be glad to check it. 
9 miles