General
Maths Puzzle
Numerical Ability
From 2008 to 2009 the sales of a book decreased by 80%, if the sales in 2010 was the same as in 2008, by what percent did it increase from 2009 to 2010.
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General Other Question
from a total of 15 people, 3 committees of 3, 4, and 5 people respectively are to be chosen. how many such sets of committees are possible if no person may serve on more than one committee?
The amount used to purchase one litre of petrol can be used to purchase three liters of diesel or five liters of kerosene. Out of a certain amount, $510 is spent on diesel.
How much is spent on kerosene if equal volumes of three liquids are purchased with the total amount.