Question

Your piggy bank has a total of 41 coins in it; some are dimes and some are nickels. If you have a total of $3.45, how many nickels do you have?

Answer 1

n + d = 41
.05n + .10d = 3.45

solve the system

Answer 2

What system?

Answer 3

5?

Answer 4

Ever heard of systems of equations?

Answer 5

I believe.

Answer 6

Forgot though.

Answer 7

I forget things easily.

Answer 8

I'm sorry to hear that.

Answer 9

Why's that?

Answer 10

You need that to solve the problem...

Answer 11

I don't know how to solve it!

Answer 12

Use the system of equations, solve for each variable.

Answer 13

Could you explain how to use them?

Answer 14

There are different ways to solve systems of equations.

Answer 15

Take a look at this: http://www.purplemath.com/modules/systlin5.htm

Answer 16

I have 3 nickels.

Answer 17

No, 5 nickels.

Answer 18

Right, vparikh

Answer 19

?