John bought a computer game puzzle

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John bought a computer game puzzle.

John bought a computer game puzzle

John bought a computer game for R150 with money he borrowed from his dad.
He sold it for R200 because he was bored with it.
He then bought it back for R250 because his sister Emma wanted it.
Finally Emma also got bored with it and John sold it for R300.

How much money did he make or lose ?

Click here for Answer

John made a total of R100 with buying and selling the computer game.
1st he bought for R150 and sold for R200. So R50 is profit.
Then he bought for R250 and sold for R300. So R50 is profit here too.
Hence total profit is R50+R50 = R100.