Answer: 7.1%
Explanation:
The cost of materials needs to reduce for the profit to increase. If the profit is to go from $21,000 to $26,000, the material cost would need to decrease by:
= 26,000 - 21,000
= $5,000
The current material cost is $70,000 so a decrease of $5,000 in percentage terms would be:
= 5,000 / 70,000 * 100%
= 7.1%
The new material cost would be:
= 70,000 - 5,000
= $65,000