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Elis [28]
3 years ago
5

Anna burned 15 calories per minute running for x minutes and 10 calories per minute hiking for y minutes. She spent a total of 6

0 minutes running and hiking and burned 700 calories. The system of equations shown below can be used to determine how much time Anna spent of each exercise.
15x + 10y =700
x + y = 60

What is the value of x, the minutes Anna spent running?

a) 20

b) 40

c) 10

d) 30
Mathematics
1 answer:
jenyasd209 [6]3 years ago
3 0
The answer is a 20. 

you do 20 * 15 = 300

700-300 = 400 divide by 10 which is 40 

20(x) + 40(y) equals 60
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