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a child find 29 nickels and dimes. how many dimes are there if the total value of the coins are $2.10?
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a child find 29 nickels and dimes. how many dimes are there if the total value of the coins are $2.10?

User Victor K
by
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2 Answers

1 vote
Devide 29 by 2.10 and you get 13.8095238 then round off to 13
So there are 13 dimes and 16 nickels
To check the answer just put 13 x 10 +16 x 5 in a calculator and the answer should be 210
User Vitaly Chura
by
7.6k points
3 votes
x represents nickels
y represents dimes
x+y=29
5x+10y=210
multiply the first equation by -5 (elimination method)
-5x-5y=-145
then add the two equations together
5y=65
divide 5 from both sides
y=13
13 dimes
User Joel Lord
by
8.0k points
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