Question

there are 100 students in a hostel. Food provision for them is for 20 days . How long will these provisions last if 25 more students join the group?

Answer 1

More number of students lesser number of days.thus they are in inverse proportion
relation of inverse proportion is
x1y1 = x2y2
100×20=125× y2
16= y2
thus the food provision will last for 16days if 25 more students join the hostel.

hope this helps you
plz mark as brainliest

Answer 2

Given ,
no. of students = 100
NO.OF FOOD PROVISIONS = 20

SUPPOSE , IF 25 STUDENTS INCREASED THEN FOOD PROVISIONS WILL BE x.

So We will use the method of inverse proportion

100×20 = (100+25) ×X
2000 =125X
by transposing
100 × 20/125 = X

So the answer is 16 days