Question 219604: I am very lost with this problem. Here it is: Arnie Waldman has chosen a workout that combines weight training and aerobics. If he does 30 min of weight training, followed by a 30-min aerobics class, he will burn a total of 374 calories. If he burns 12/5 as many calories doing aerobis as doing weight traing, how many calories will he burn in each activity?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Arnie Waldman has chosen a workout that combines weight training and aerobics. If he does 30 min of weight training, followed by a 30-min aerobics class, he will burn a total of 374 calories. If he burns 12/5 as many calories doing aerobis as doing weight traing, how many calories will he burn in each activity?
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weight training calories: x
aerobic calories::::::::: (12/5)x
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Equation:
x + (12/5)x = 374
Multiply thru by 5 to get:
5x + 12x = 5*374
17x = 5*374
x = 110 calories (from weight training)
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(12/5)x = 264 calories (from aerobics)
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Cheers,
Stan H.
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