27. A farmer divides his herd of cows among his

four sons so that first son gets one half of the

berd, the second son one-fourth, the third son

one fifth and the fourth son 7 cows, the total

number of cows in the herd is:

we have to find a common denominator for the fractions so

1/2 1/4 1/5

they all go into 20

so

10/20 5/20 4/20

in total that is 19/20

so the last son has 1/20 which is seven

so 20/20 is 20 times that amount which is 140

140 cows

We have to find a common denominator for the fractions so

1/2 1/4 1/5

they all go into 20

so

10/20 5/20 4/20

in total that is 19/20

so the last son has 1/20 which is seven

so 20/20 is 20 times that amount which is 140

140 cows