Book Maths Puzzle

A merchant made a profit of g% by selling an article at a certain price. Had he sold it at two thirds of that price, he would have incurred a loss of 20%. Find ā€˜gā€™.

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Book Other Question

Two numbers are respectively 40% and 50% more than the third number. What percentage of the 2nd
number is the first number?
A trader sells two steel chairs for Rs.500 each. On one, he claims to have made a profit of 25% and on the other, he says he has lost 20%. How much does he gain or lose in the total transaction.