Ryan has some nickels and dimes. altogether, he has 34 coins that total $2.60. write and solve a system of equations to determine how many of each coin he has.

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asked Jul 11, 2019 104k views

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Ryan has some nickels and dimes. altogether, he has 34 coins that total $2.60. write and solve a system of equations to determine how many of each coin he has.

Mathematics
high-school

THESorcerer asked

by THESorcerer

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1 Answer

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n+d=34
.05n+.10d=2.60

Solve by substitution
n=34-d
.05(34-d)+.10d=2.60
1.7-.05d+.10d=2.60
.05d=.90
d=18 dimes
18+n=34
n=16 nickles

ZhenYu Wang answered Jul 17, 2019

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