question in description

Question

Dylan looked in the coach for loose change. He found 22 nickles and quarters totaling $4.30. how many were nickles and how many were quarters 

Answer 1

n = number of nickels at 5 cents each

22 - n = number of quarters at 25 cents each

 

5n + 25(22 - n) = 430 cents

 

Can you solve for n and finish from here?

Answer 2

Let N = # of nickels and Q = # of quarters

 

N + Q = 22

.05N +.25Q = 4.30

 

Multiply the 2nd equation by 20 to get N + 5Q = 86

Subtract the 1st equation from this one to get: 4Q = 86

 

You solve it from here!