Question

25 points for this question.

A tourist first walked 17 km with a speed of v km/h. Then he hiked 12 km uphill with the speed that was 2 km/hour less than his original speed. The whole trip took him t hours.

How much time did the tourist spend on this trip if his original speed was 5 km/h?

Answer 1

Answer: 7 hours 24 minutes

Explanation:

17 and 5 go into each other 3 2/5 times

12 and 3 go into each other 4 times

Add 3 2/5 and 4 to get 7 2/5

That is equal to 7 hours and 24 minutes