Question

Bodhi has a collection of 175 dimes and nickels the collection is worth $13.30 what equation can be used to find n the number of nickels in the collection

Answer 1

84 nickels, 91 dimes

Explanation:

d = # of dimes

n = # of nickels

0.1d + 0.05n = 13.3

d + n = 175

Now solving for n:

Lets multiply the first equation by 100 for ease

10d + 5n = 1330

n = 266 - 2d

d = 175 - n

Substituting it in:

n = 266 - 2(175 - n)

n = 84