Answer:
10 nickels
Step-by-step explanation:
If she has a maximum of 66 cents and 12 are pennies than you need to see how many nickels go into 54 cents. You can only get 50 cents with nickels so you will have 10 nickels and 12 pennies for a total of 22 coins and 62 cents.
I am not getting your question .
x - 4 = 2y
"four less than a number x" therefore; x - 4
"is twice another number y" therefore; 2y