Hasan sold an article for 56 taka which cost him x taka . If he had gained x% on his outlay, what was his cost ?

Hasan sold an article for 56 taka which cost him x taka . If he had gained x% on his outlay, what was his cost ? Correct Answer 40 taka

56 - x /x = x% 56 - x / x = x/100 5600 - 100x = x2 x2 + 100x - 5600 = 0 x2 + 140x - 40x - 5600 = 0 ( x - 40) ( x + 140) = 0 x = 40
Bissoy MCQ

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