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A personal trainer designs exercise plans based on a combination of strength-training and aerobic exercise. A beginner plan has 15 minutes per session of strength-training and 20 minutes per session of aerobic exercise for a total of 90 minutes of exercise in a week. An advanced plan has 20 minutes per session of strength-training and 30 minutes of aerobic exercise for a total of 130 minutes of exercise in a week.


Which statement describes when the plans are based on the same number of aerobic exercise sessions?

A. Each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week.

B. Each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week.

C. Each plan utilizes a combination of 3 strength-training sessions and 2 aerobic exercise sessions per week.

D. Each plan utilizes a combination of 3 strength-training sessions and 3 aerobic exercise sessions per week.

Respuesta :

Kaikerscupcake
Let's take a look at the beginner plan:

15 min.of strength training
and 20 min. of aerobic exercise. 

Each week (it is said) that you do 90 min of training. 





Advanced plan: 

 20 minutes of strength training and 30 minutes of aerobic training. 
Each week you do a total of 130 min. of training. 

Now, we can plug in the answer choices to the equations. 

Two sessions of strength training and aerobics:
15(2)+ 20(2)= 70 (does not equal ninety) 

Let's move on to the next one. 

2 sessions of strength training and 3 of aerobics. 

15(2)+20(3)= 90 Okay, that works. 

20(2)+30(3)= 130 Also correct.

B is the correct answer.

Have a nice day!

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