A young girl pours 23 blue beads and 16 yellow beads into a bowl. She divides the total into 3 equal parts, removes some beads from each part, and doubles the rest to have 6 beads in each part now. How many beads were removed from each part?
There are 23+16=<T>add(23, 16)=39 beads in the bowl
Dividing them into 3 equal parts give 39/3=<T>divide(39, 3)=13.0 beads each
Before doubling the number of beads, she had 6/2=<T>divide(6, 2)=3.0 beads left in each part.
Therefore she had removed 13-3=<T>subtract(13, 3)=10 beads from each part.
