Can You Solve This In 10 Seconds?

So he sold them both at the same price, yet he made a loss on one and a profit on the other. That means the original price must be different to £600.

This is the key information to this math puzzle. Read on to find out if he made a profit or not!

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Solution

Let’s call the price of these two aeroplanes A and B respectively. Let’s say he makes a loss on A and a profit on B.

This means A = 600/(0.8) = 750 and B = 600/(1.2) = 500.

Now the cost is 1250 and the revenue is 1200, so he made a loss of £50 as a result.

And that’s our answer. How amazing :)

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A Challenge

Since you are a paid subscriber to this Substack newsletter, here’s also the solution to the challenge!