Question 526553
Jill had 33 coins in her pocket, some quarters and some dimes. The value of the coins is $5.55. How many of each type of coin did she have?

The best way to solve this problem would be to guess and check.
Knowing that dimes are worth .10 cents and quarters are worth .25 cents, And that their are 33 coins in her pocket, all equaling $5.55, We can solve this problem.

After trying many way of getting the right answer, you will soon find this to be your equation, 

15(.25)+18(.10)
3.75+1.80 = $5.55 

The answer is 15 quarters and 18 dimes. (I guessed it on the first try.)