lopezmelanie15 lopezmelanie15

21-03-2018
Mathematics

contestada

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

Respuesta :

wolf1728 wolf1728

21-03-2018

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!!

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