62. A merchant sold an article for Rs.75 at a
profit per cent equal to his cost price. The
cost price of the article is
a) 45
b) 50
c) 54
d) 60
what is the trick for solving in less time since it makes a quadratic equation which takes more time.
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Understand the question first.
imran78664:
i understood and solved it too, but it becomes lengthy. i need to know tricks for solving these types. Thanks though.
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