This is similar to Problem 12 from your Section 2.3 (part 2) worksheet.

At the end of the day, Helen throws all the change from her purse into a box. The box contains only pennies, nickels, and dimes. At the end of one week she found that the total value of the coins was $$4.36$. If the number of dimes was $9$ more than the number of nickels and the number of pennies was $10$ more than the number of nickels, how many nickels were in the box?

There were nickels in the box.

Hint:

Hint: