This is really !
when anne betty and cynthia compared the amount of money each had, they discovered that anne and betty together had $12 betty and cynthia together had $18 and anne and cynthia together had $10.
who had the least amount of money? and how much was it?

When Anne Betty and Cynthia compared the amount of money each had, they discovered that Anne and Betty together had $12 Betty and Cynthia together had $18 and Anne and Cynthia together had $10. 
Who had the least amount of money? and how much was it?
a +b = 12
b + c = 18
a + c = 10
So what I did is simple XD A logical guess and check. I started with a = 1, but that was to little. And also didn't match up. So I kept going up and got a = 2, b = 10, and c = 8

Idrk but i think u should figure out the n dia n then the units it will make it way more easier