Question

Kelli had $2.25 in dimes and nickels. She had 4 times as many dimes as nickels. How many dimes does Kelli have?

Answer 1

A) .05n + .10d = 2.25
B) 4n = d
Multiplying A) by 10
A) .5n + d = 22.50 then adding it to B)
B) 4n - d = 0
4.5n = 22.50
n = 22.50 / 4.50
n = 5
d = 20

5 nickels (25 cents) + (20 dimes) = 2.25
correct!!