Question

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?
a) 6
b)12
c)10
d)24

Answer 1

might want to start by writing up some equations with the information given

Answer 2

n = 2d

2d(.05) + d(.10) = 1.20

solve for d

Answer 3

okay

Answer 4

or at worst run thru the options:

ex: 6(.10) + 2*6(.10) and see if they equate to 1.20