A carpenter buys wood for $45 and varnish for $5 to make one table, which sells for $140. Better design then lets the price rise to $155 with the same materials. What happens to value added per table?
- Cost of bought-in materials = $45 + $5 = $50.
- Value added before = $140 − $50 = $90.
- Value added after = $155 − $50 = $105.
- Change = $105 − $90 = $15.
Answer: Value added per table rises by $15, from $90 to $105.