Question

Your piggy bank has a total of 47 coins in it; some are dimes and some are nickels. If you have a total of $3.95, how many nickels do you have?

Answer 1

there are many answers...

Answer 2

Wait...no

Answer 3

n = (3.95 - 47(10))/(5-10) perhaps

Answer 4

Hold on, brb

Answer 5

that almost works :)

Answer 6

.10 and .05

Answer 7

n = (3.95 - 47(.10))/(.05-.10) is better

Answer 8

15 is good

Answer 9

make 2 equations
n+d=47
and
0.05n+0.10d=3.95

Answer 10

It's 32 dimes and 15 nickels, my bad