laurenelizabet laurenelizabet

12-06-2017
Mathematics

contestada

Peggy had 3 times as many quarters as nickels. She had 1.60 in all. How many nickels and how many quarters did she have

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wolf1728 wolf1728

14-06-2017

It doesn't seem to work with $1.60 total.
It DOES work with a $16.00 total.

A) 3n = q
A) 3n -q = 0
B) .05n + .25q = 16.00
Multiplying equation A by .25
A) .75n -.25q =0
B) .05n + .25q = 16.00
.80n = 16.00
20 nickels = 1.00
60 quarters 15.00

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