# X06 · Optional projects job

Five kits cost $12 each plus one $8 fee. Supplied budget $100. Two unused kits may be removed, and the fee stays. Compare plans.

Use scrap paper or a private explanation. No purchase, household information or public performance.

## Adult teaching after an own try

### Answer

First:$68/$32 left. Revised:3 × $12 + $8=$44/$56 left.

### Why

Separate fixed and repeated costs.

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