In a change jar, Tom has nickels and dimes. The number of nickels is two times the number of dimes and the total amount of money in the jar is $1.20. How many dimes are in the jar?

Question

texaschic101 · Answer

.05n + .10d = 1.20 (multiply by 100 to get rid of decimals)
5n + 10d = 120

n = 2d

now sub 2d in for n

5(2d) + 10d = 120
10d + 10d = 120
20d = 120
d = 120/20
d = 6

n = 2d
n = 2(6)
n = 12

check..
5n + 10d = 120
5(12) + 10(6) = 120
60 + 60 = 120
120 = 120 (correct)

there is 12 nickels and 6 dimes

anonymous · Answer

Thanks! And could you stay on I will probably run into another word problem.

texaschic101 · Answer

I will be on for a little while longer :)

anonymous · Answer

Okay so the quotient of five and seven numerically would be 5 divided by 7 or 7 divided by 5?