$480 worth of fuses can power 240 motors. This is calculated by dividing $480 by $2 to get the total amount of policies that can be purchased. Then the total number of fuses is divided by 3, which is the number of fuses per motor.
This calculation results in 240 motors that can be supplied with $480 worth of fuses. In more detail, the calculation is as follows:
(480/2) / 3 = 240
This means that 240 engines can be supplied with $480 worth of fuses. This calculation is based on the assumption that each motor requires 3 fuses and that each fuse costs $2
Hopes this helps with your question. :)