Kevin has a collection of nickels, dimes and quarters whose total is $6.50. There are twice as many dimes as nickels and 8 less quarters than nickels. How many of each coin does Kevin have?

Please Show Your Work! Thank You!!

Question

Kevin has a collection of nickels, dimes and quarters whose total is $6.50. There are twice as many dimes as nickels and 8 less quarters than nickels. How many of each coin does Kevin have?

Please Show Your Work! Thank You!!

anonymous · Answer

@Hero can you help me plz!!

hero · Answer

.05n + .10d + .25q = 6.50
d = 2n
q = n - 8

anonymous · Answer

Thx!!

hero · Answer

That's not the answer. That's just a hint.

anonymous · Answer

i know.

anonymous · Answer

@Hero i think i'm doing it wrong. i got 4.14

hero · Answer

.05n + .10(2n) + .25(n-8) = 6.50
.05n + .20n + .25n - 2 = 6.50
(.05 + .20 + .25)n = 6.50 + 2
.50n = 8.50
n = 8.50/.50

hero · Answer

Do you get it bro?

anonymous · Answer

i forgot to multiply 0.25 * 8
i'm so stupid!
Thx for helping!