Atourist first walked 17km 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. what is a formula for t in terms of v?

Step-by-step explanation:

Given: A tourist first walked 17km with a speed of v km/h.

Since

therefore,

Let be the time he walked with speed v.

then

Also he hiked 12 km uphill with the speed that was 2 km/hour less than his original speed.

Let be the time he hiked 12 km,

Then

The total time for the whole trip is given by:-

Substitute the values of and in the equation, we get