Question

A hostel mess has provisions for 200 students for 30 days. If 100 new students join the hostel, how
long will the provisions last​

Answer 1

15 days..............

Answer 2

step by step

it's inverse variation

if 200 students mess for 30 days

so;1 student mess for 30×200

We all know that when no.is big and ask small then we do divide but it's inverse variation then we will do multiply

therefore

100 new students also join hostel

then 200+100=300

so;

200 students mess for 30 days

1 student mess for 200×30 days

300 students mess for 200×30÷300

=6000÷300

20

second method

in inverse variation

200×30=300×x

then

6000=300×x

6000÷300=x

x=20

Answer is coming 20