Need help with this, thanks! it isn't part of a test, just a review question taken from one :)

Question

asked Feb 19, 2023 125k views

1 Answer

Boid · Answer 1 · 2023-02-23T11:16:06+0000

Part A:

$\begin{gathered} x+y=75 \\ x+15=y \end{gathered}$

Part B:

we need to solve x, we can replace the second equation(y=x+15) on the first equation

$\begin{gathered} x+(x+15)=75 \\ x+x+15=75 \\ 2x=75-15 \\ x=(60)/(2) \\ \\ x=30 \end{gathered}$

he spends 30 minutes jogging

Part C:

Its impossible because if he rides 60 minutes must jog 15 less minutes, 45 minutes, and the sum isnt 75