No. of animals is 11 more than the no. of birds. If the no. of birds were the no. of animals and no. of animals was the no. of birds( i.e., interchanging numbers of animals and birds.), the total no. of legs get reduced by one fifth (1/5). How many no. of birds and animals were there?

Birds:11, animals:22
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Nishant Joshi

  • Nov 26th, 2005
 

let no of birds be x then animals = x+11 ....

total no of legs = 2x + 4(x+11)

after interchanging legs = 4x+2(x+11)

now diff is

2x+4(x+11) -  4x+2(x+11) = 1 (2x+4(x+11) )/5

u will get x=11

kumaran

  • Feb 3rd, 2007
 

ans=11

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