Problem 18. (4 points)

By producing and selling 4000 items at a price of 6250 rubles each, a budding businessman earned 2 million rubles in profit. Variable costs for one item amounted to 3750 rubles. By what percentage should the businessman reduce the production volume to make his revenue equal to the cost? (Provide the answer as a whole number, without spaces or units of measurement.)

Answer: 20.

## Comment:
Solution: fixed costs $=-2$ million, gap $+4000 \times 6250-3750 \times 4000$ million $=8$ million.

$6.25 \times Q=3750 Q+8 \text{ million}$.

$Q=3200$ units.

Can be taken out of production $=4000-3200=800$ units, that is, $20\%$.