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vlada-n [284]
3 years ago
12

a vending machine takes only nickels and dimes. at the end of the day there were three times as many nickels as dimes and a tota

l of $25. how many of each coin were in the machine
Mathematics
2 answers:
Ksivusya [100]3 years ago
3 0
100 dimes and 300 Nickels
Jlenok [28]3 years ago
3 0
X= dimes
Three times as many = 3x= nickels

Dimes are worth 10 cents = 0.10x
Nickels are worth 5 cents = 0.05(3x)

Add both together & solve:

0.10x+0.05(3x)= 25
0.10+0.15x= 25
0.25x=25
Divide both sides by 0.25
x= 100 dimes
Substitute the value of x to find 3x
3x = 3(100)= 300 nickels

Hope this helps!! :)
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