Question

Use the picture to answer the question

Answer 1

Answer:

10 minutes on stationary bike

30 minutes on elliptical trainer

Step-by-step explanation:

set up a system of equations:

8t+6b=300

t+b=40

*let t represent elliptical trainer, and let b represent stationary bike

solve by substitution:

8t+6b=300

t=40-b

8(40-b)+6b=300

320-8b+6b=300

-2b=-20

b=10

so, you should spend 10 minutes on the stationary bike

to find how long you should spend on the elliptical trainer:

t=40-b

t=40-10

t=30

so, you should spend:

10 minutes on stationary bike

30 minutes on elliptical trainer