Question

Now, suppose gas costs $2 per gallon. Find the total distance the boys could travel.

Answer 1

Wehave the following:

according to the statement we have the following equation

$d(p)=20\cdot(\frac{15}{p}+8)$

where d is the distance and p is gas cost

replacing when p is 2

$\begin{gathered} d(2)=20\cdot(\frac{15}{2}+8) \\ d(2)=310 \end{gathered}$

Therefore he was able to travel a total of 310 miles