Question

if he get 20% profit and 20% loss what is his over all profit or loss ?

Answer 1

Answer ::

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He got a loss of 4 % .

Here's a trick to prove that :

In this type of business the dealer only gets loss where the profit and loss percentage is same .

Divide the profit and loss percent by 10
20 /10 = 2

Square the number = 2 ^2
4

So the loss percentage is 4 .