Mary has 30 nickels and dimes worth $2.40. how many nickels does Mary have

asked Nov 4, 2019 133k views

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5 votes

mary has 12 nickels $2.40 - 30 dimes = 12 nickels

Seperman answered Nov 5, 2019

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n=nickels
d=dimes

n+d = 30
n+18 = 30
n = 30-18
n = 12 (number of nickels)

therefore Mary has 12 nickels

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