Question

there are 100 students in a hostel food provisions for them is 20 days how long will there be food provisions last if 25 more students join the group

Answer 1

the given is a case o of inverse proportion

it means x1*y1=x2*y2


where x1=100
y1=20
x2=100+25=125
y2=no. of days

so apply the formula

100*20=125*y2

y2=100*20/125

y2=16

so the food provision for 125 students will last for 16 days