A jar contains 10 red marbles and 30 gre...

A jar contains 10 red marbles and 30 green ones. How many red marbles must be added to the jar so that 60% of the marbles will be red?

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CHAMPION PUBLICATION-2011 TIER-II PAPER(23)-EXERCISE

Of three numbers, the second is thrice the first and the third number ...
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A jar contains 10 red marbles and 30 green ones. How many red marbles ...
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60% of the cost price of an article is equal to 50% of its selling pri...
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If the simple interest on Rs.x at a rate of a% for m years is same as ...
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The area of square is 200m^2. A new square is formed in such a way tha...
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The heights of a cone, cylinder and hemisphere are equal. If their rad...
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A motorboat can travel at 10 km/h in still water. It travelled 91km do...
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A man driving at 3/4th of his original speed reaches his destination 2...
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