lostgirl14480 lostgirl14480

22-02-2018
Mathematics

contestada

how many quarters and dimes of 80 coins make up 14.45

Respuesta :

meredith48034 meredith48034

22-02-2018

q + d = 80
.25q + .10d = 14.45

q. + d= 80
25q + 10d = 1445

-10q. - 10d = -800
25q + 10d = 1445

15q. = 645

q = 43 quarters

43 + d = 80

d= 37 dimes

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