Q + D = 42
.25Q + .1D=8.70
Multiply the 2nd equation by 10 to get 2.5Q + D= 87
Subtract to get :1.5Q=45 => Q=30 and D = 12
SETH D.
asked • 10/29/19please helppppppppppppppppp
Mackenzie accidentally broke a piggy bank to find a combined total of 42 dimes and quarters. if she has a total of $8.70 how many quarters and how many dimes does she have?
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