Question

At 1:30 Marlon left his house to go to the beach, a distance of 9.375 miles. He rose his skateboard until 2:15, and then walked the rest of the way. He arrived at the beach at 3:00. Marlon's speed on his skateboard is 1.5 times his walking speed. Find his speed when skateboarding and when walking.

Answer 1

x = speed in miles/hour

(45/60)1.5x + (45/60)x = 9.375

Solve for x.