Question

marcy has a total of 100 dimes and quarters. If the total value of the coins is $14.05, how many quarters does she have?

Answer 1

x = the number of dimes
y = the number of quarters

x + y = 100
.10x + .25y = 14.05

x + y = 100
10x + 25y = 1405

-10(x + y = 100)
10x + 25y = 1405

-10x - 10y = -1000
10x + 25y = 1405

15y = 405
y = 27

73 dimes
27 quarters

Answer 2

thank u soo much! (;