x+y=60
15x+10y=700
Yes, your equations are correct.
multipy the first equation by 20, then subtract it from the second.
Anna burned 15 calories per minute running for x minutes and 10 calories per minute hiking for y minutes. She spent a total of 60 minutes running and hiking and burned 700 calories. The system of equations shown below can be used to determine how much time Anna spent on each exercise. What is the value of x, the minutes Anna spent running? * 15x + 10y = 700 / x + y = 60
1 answer
1 answer