Asked by depart
Three lemon cremes plus two fudge cookies have 400 calories. Two lemon cremes plus thre fudge cookies have 425 calories. How many calories are in each kind of cookie?
Answers
Answered by
R_scott
3 L + 2 F = 400 ... multiplying by 2 ... 6 L + 4 F = 800
2 L + 3 F = 425 ... multiplying by 3 ... 6 L + 9 F = 1275
subtracting equations (to eliminate L) ... 5 F = 475
solve for F , then substitute back to find L
2 L + 3 F = 425 ... multiplying by 3 ... 6 L + 9 F = 1275
subtracting equations (to eliminate L) ... 5 F = 475
solve for F , then substitute back to find L
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