theorem1:-

The Rule of Three is a Mathematical Rule that allows you to solve problems based on proportions. By having three numbers: a, b, c,

(a)Direct proportions rule of 3:-

if ab

c then

(b)inverse proportions rule of 3:-

if ab

c then

formula:- (i)direct method----

(ii)indirect or inverse proportions xy=k

given:- method used is called direct method

6 pump is used for 31.2 of land cultivation

1 pump will be used for

13 pumps will used for cultivation of 13x5.2=67.6 of land