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Snezhnost [94]
3 years ago
11

At the gym, Cara burns 12 calories per minute on the elliptical and 10 calories per minute on the treadmill. If she worked out f

or one hour and burned 676 calories, how many minutes did she spend on the elliptical
Mathematics
1 answer:
bija089 [108]3 years ago
7 0
E=elliptical
T= treadmill
12E+10T=676
also, she worked out one hour
E+T=60
E=60-T   we substitute now
12(60-T)+10T=676
720-12T+10T=676
720-2T=676  substract 720 from both sides
-2T=-44 now divide by (-2)
T=22
if T=22 E=60-22=38
she spends 38 min on the elliptical 



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