Answer :

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 indirect or inverse proportions method


In a shelter camp of 4000 people have food 9 days.
4000× 9 =36,000 ration available
After 3 days 1000 men went away to another place.
in this, 3 days,


4000× 3 = 12000 ration consumed
36000 - 12000 = 24000 ration remain


Let d = no. of days
(4000-1000)d = 24000
3000d = 24000


d=12days


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