SOLUTION: At the gym cara burns 12 calories per minute on the elliptical and 10 calories per minute on the treadmill if she worked out for 1 hour and burned 676 calories how many minutes did

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: At the gym cara burns 12 calories per minute on the elliptical and 10 calories per minute on the treadmill if she worked out for 1 hour and burned 676 calories how many minutes did      Log On


   

Question 1066703: At the gym cara burns 12 calories per minute on the elliptical and 10 calories per minute on the treadmill if she worked out for 1 hour and burned 676 calories how many minutes did she spend on the elliptical?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Total calories expended
12E%2B10T=676
Total time,
E%2BT=60
From time equation,
10E%2B10T=600
Subtract from the calorie equation,
12E%2B10T-%2810E%2B10T%29=676-600
2E=76
E=38min
Then,
38%2BT=60
T=22min