Money word problem: Bill has 4 times as many quarters as....

Bill has 4 times as many quarters as dimes. In all he has $2.20. How many coins of each type does he have?

So far i did::::

Let d=# of dimes
4d=# of quarters

For every dime, there are four quarters. What is the value of a set of coins, consisting of one dime and four quarters?

How many of these sets "fit" into $2.20?

So how many dimes are there? Then how many quarters are there?

Eliz.