Jacoby has 90 coins of quarters and dimes in a coin jar. If he has a total of $15.25 in the jar, write the system of equations which can be used to find how many quarters and dimes he has.

Question

Variable: Equation:

Variable: Equation:

Answer 1

q = number of quarters

d = number of dimes

q * 0.25 = value of quarters

d * 0.10 = value of dimes

q + d = 90

q*0.25 + d*0.10 = 15.25