Question

Sam has a total of 200 dimes and quarters. If the total value of the coins is $28.10, how many quarters does he have?

Answer 1

How many quarters make a dollar?

Answer 2

4

Answer 3

So how many times of that, would you need to make 28 dollars?

Answer 4

let number of quaters =n
then n(1/4)+(200-n)(1/10)=28.10
solve for n

Answer 5

idk

Answer 6

well if 4quarters*1 = 1 dollar and
4quarters *2= 2 dollars = 8quarters...
How do we figure out how many for 28 dollars knowing the above?

Answer 7

solve further by yourself