Alfred has twelve coins in his piggy bank. Some of the coins are quarters, some are nickels, and he has a total of $3.15. Which

Question

3 years ago

13

Alfred has twelve coins in his piggy bank. Some of the coins are quarters, some are nickels, and he has a total of $3.15. Which

system of equations can be used to determine how many quarters, x, and how many nickels, y, he has?
Please don't answer unless you know the answer.

Mathematics

1 answer:

Serga [27] · Answer 1 · 2022-06-21T09:54:10+03:00

Serga [27]3 years ago

3 0

My guy 12 coins, it takes 12 quarters to make $3. It would have to be 15 coins for it. 4 quarters = one dollar. 4 quarters x 3 would equal $3, but that’s 12 coins. Then 3 nickels after that. So Alfred has to have 15 coins if it’s only nickels and quarters.