Question

In a Zoo 50% monkeys are lean & 40 % of monkeys are Black & 40% of monkeys are white and fat. If 90 monkeys are black and fat then how many number of monkeys are white.........?

Answer 1

in order to solve this.. there r 2 assumptions
first there should be only white and black monkey ...i mean no grey or red
other is
they either fat or lean

Answer 2

If 40% of the monkeys are black,
then 60% are white.
Then, if 40% are white and fat, that leaves 20% that are white and lean.

Knowing that 50% are lean but 20% are white and lean leaves 30% that are black and lean.

Since 40% are black and 30% are black and lean, that leaves 10% that are black and fat.

But there are 90 black and fat monkeys which represent 10% of the total, hence there are 900 monkeys altogether.

Of the 900 monkeys, 60% are white.

now u should be able to do this...

source - http://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-and-ratio-word-problems.faq.question.643540.html

hope this will help ya !!

Answer 3

can you please explaine this line.....

?.....Then, if 40% are white and fat, that leaves 20% that are white and lean.....?

Answer 4

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