Answer:
8 miles per hour.
Step-by-step explanation:
24miles in 4 hours = 24/4=6 miles per hour.
24 miles in 3 hours = 24/3=8 miles per hour. The boat going with the current of the river is traveling at 8 miles per hour.
$20-$14.56=$5.44
The mechanic would get $5.44 back as change.
4 x 7.04 ...................................
