In drewland, the money supply equals $1,000 and velocity of money is 3. the government budget is $300, consumers spend $1500, and investors spend $500. when national output is 30, then price equals

We are given:

Money supply = $1,000
Velocity of money = 3, this is the amount per unit time 
Government Budget = $300
Consumers = $1500
Investors = $500
National Output = 30 

First, let us group the terms:

Input = Money Supply + Investors
Output = Government Budget + Consumers

Input = $1000 + $500 = $1500
Output = $1500 + $300 = $1800

The price should be the difference of Output - Input:

$1800 - $1500 = $300.

This should be the least price value for Drewland to break even on their budget and expenses. 

It would be contaminated with germs

Acapitalist economy is when all goods are owned by the government or private industries.