Test your IQ: How much money did he make or lose?

 

A man buys a laptop for $500, then sells it for $600. He buys the laptop back for $700, and then sells the laptop for $800. How much money did he make or lose?

   

    

 

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Method 1:

Step 1: Man buys a laptop for $500. He sells the laptop for $600. So profit: $600-$500=$100

Step 2: He buys back the laptop for $700.
Profit: $100-$700 =-$600

Step 3: He sells the laptop for $800. He gets $800.
Profit: -₹600+$800=$200

Method 2: 

Step 1: Man buys a laptop for $500. He sells the horse for $600. So profit: $600-$500=$100

Step 2: Again, he buys a laptop for $700. He sells the laptop for $800.

So profit: $800-$700=$100  Total profit $100+$100=$200

Method 3:

Money he spent on buying is $500+700=$1200 Money he got on selling is $600+₹800=$1400
So profit $1400-$1200=$200