RRB NTPC Mains or Stage 2 Model Paper 3 with solutions

Question : 39 of 120

Marks: +1, -0

A farmer divided his herd of n cows among his four sons, so that the first son gets one-half the herd, the second one-four th, the third son

1/5

and the four th son 7 cows. Then the value of n is

Solution:

Total cows = n
Given

n/2+n/4+n/5+7=n

{10n+5n+4n+140}/20=n

n = 140

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