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Arithmetic Reasoning - Verbal and Reasoning

Q1:

In a group of cows and hens, the number of legs are 14 more than twice the number of heads. The number of cows is

A 5

B 7

C 10

D 12

ANS:B - 7

Let the number of cows be x and the number of hens be y.Then, 4x + 2y = 2 (x + y) + 14 4x + 2y = 2x + 2y + 14 2x = 14 x = 7.