SHEEP PRICE SELL REVENUE IF SWITCHED PRICES
A a Aa Ab=3200
B b Bb Ba=2450
30
As sold, Aa=Bb
The description analyzed and tabulated gives four unknown variables and four equations.
for sheep counts A and B, corresponding to how many each person had, and a and b, the prices at which each sold sheep.
Last two equations give , and .
Substitute into the Equal Revenue equation, and then simplify, gives
.
Revised system of equations just in A and B can be
--------Solve the system.