Question

bruce discovered that the wishing well contained 9 dollars in nickels and dimes. and that there were 30 more dimes than nickles. how many coins of each type were there?

Answer 1

i corrected the bus problem - sorry about that

Answer 2

before i do this - im from uk - i dont know what a dime or a nickel is!

Answer 3

0.5n + 0.10n = 9
0.5n + 0.10(n+30) = 9

Solve for n, you have n= 10

So you have 10 nickels and 40 dimes.

You can find if it is correct with:

0.5(10) + 0.10(40) = ?
if it is equals to 9 then it is correct.