1. A motorboat leaves a harbor and travels at an average speed of 15 mph toward an island. The average speed on the return trip

Question

3 years ago

8

was 10 mph. How far was the island from the harbor if the total trip took 5 hours

1 answer:

jenyasd209 [6] · Answer 1 · 2022-03-14T06:33:27+03:00

Answer:

30 miles

Step-by-step explanation:

Let d represent the distance to the island. The relation between time, speed, and distance is ...

time = distance/speed

so the total time for the round trip is ...

d/15 +d/10 = 5

Multiplying by 30, we get

2d +3d = 150

d = 150/5 = 30

The island was 30 miles from the harbor.