Problema Solution
Joan has a pocketful of dimes and quarters worth $2.95 with 22 coins how many quarters are there
Answer provided by our tutors
1 dime = 10 cents
1 quarter = 25 cents
let
d = the number of dimes, d>0, d is integer
q = the number of quarters, q>0, q is integer
Joan has a pocketful of dimes and quarters worth $2.95 = 295 cents with 22 coins:
d + q = 22
10d + 25q = 295
by solving the above system of equations we find
d = 17 dimes
q = 5 quarters
click here to see the step by step solution of the system of equations
there are 5 quarters.