Aman bought a horse for $60 and sold it for $70. then he bought it back for $80 and sold it for $90. how much did he make or lose in the horse trading business? indicate:

Profit = $20

Explanation:

It is given that a man bought a horse for $60 and sold it for $70. Then he bought it back for $80 and sold it for $90.

Total revenue = $70 + $90 = $160

Total expenditure  = $60 + $80 = $140

The formula for profit is

Substitute $160 for revenue and $140 for expenditure in the above formula.

Therefore, he make $20 in the horse trading business.

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