Betty has 10 more dimes than quarters. If she has $3.45, how many coins does she have?

Question

anonymous · Answer

q = number of quarters

If Betty has 10 more dimes than quarters, then add 10 to q to represent the number of dimes like this:

q + 10 = dimes

So the equation is:

.25q + .10(q+ 10) = $3.45

...where .25 is the value of a quarter multiplied by the number of quarters (q).

...where .10 is the value of a dime multiplied by the total number of dimes (q + 10).

Can you solve it now?