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

with 9 km/hr velocity 112.25km distance is travelled

with 1 km/hr velocity 112.25/9=12.4722 km distance is travelled

so,with 12km/hr velocity 12.4722x12=149.6666km distance