For the first 30 km, the bicyclist rode with a speed of v km/hour. for the remaining 17 km he rode with a speed which was 2 km/hour greater than his original speed. how much time did the bicyclist spend on the entire trip? let t be the time (in hours), and find t if: v=15 t in terms of v is

t in terms of v is

when v=15, t will be 3

Step-by-step explanation:

We know that,

For the first 30 km, the bicyclist rode with a speed of v km/hr. So the time taken by the cyclist to cover up 30 km is,

hr

For the remaining 17 km he rode with a speed which was 2 km/hr greater than his original speed i.e (v+2) km/hr

hr

So the total time is the sum of these individual times. So,

When v=15, t is

↓↓↓↓↓↓↓↓↓

step-by-step explanation:

this is a parabola.

the answer is about 24 dollars