Of the beads in a box, 3/4 are yellow. of the remainder, 25% are blue beads and the rest are red beads. there are 15 more red beads than blue beads in the box. how many yellow beads are there?

15 more red beads than blue. of the remaining 25% are blue. 
25%= 1/4
15 divided by the remaining three quarters is 5. which means that each quarter is 5 beads in the remaining 25%.

red beads: 15
blue beads 5    25% of beads is 20.

20 multiplied by the 3 quarters left is 60.

there is a total of 60 yellow beads 

If jon had $4.00 then takes away $2.25, then he should have $1.75 left. $4.00 - $2.25 = $1.75 hope this ; )