A farmer divides his herd of n cows among his four sons so that one son gets one-half the herd, the second, one-fourth, the third son, one-fifth and the fourth, 7 cows, then n is
Answer: 140
Explanation
There are n cows:
First son gets: 2n
Second son gets: 4n
Third son gets: 5n
Fourth son gets: 7 cows
Therefore, sum of cows each son gets equals the total number of cows
2n+4n+5n+7=n
7=20n
n=140
Second son gets: 4n
Third son gets: 5n
Fourth son gets: 7 cows
Therefore, sum of cows each son gets equals the total number of cows
2n+4n+5n+7=n
7=20n
n=140
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