KIRANMAYI RAVADA
KIRANMAYI RAVADA
3 months ago

There are only deers and ducks in a zoo.when the heads are counted, it is 204 n legs are 512.how many dears are in zoo.

A. 152

B. 176

C. 26

D. 52

Answer: Option D

Solution(By Examveda Team)

Let consider number of Dear as X and number of Duck as Y.Therefore
4X +2y= 512, ---- (i) and
X + Y= 204, ----- (ii)
By Solving (i) and (ii)
X= 52 and Y = 152
So total number of dear is 52

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Comments ( 1 )

  1. Ravendra Singh
    Ravendra Singh :
    1 week ago

    4×Dear +2×Duck= 512,
    Dear+Duck=204,
    Now, Duck= 204-Dear,
    Now, 4×Dear+ 2×(204-Dear)=512,
    4×dear+408-2×Dear=512,
    Now 2×Dear=512-408= 104
    So that Dear= 104/2= 52

    So total dear= 52,

    Option D = 52 is right

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