Question

In a hostel there are 40 boys.they have provisions for 30 days.20 more boys join the hostel.how long will the provisions last now.

Answer 1

one boy will have provision for=40/30
=4/3

now the total no.of boys=40+20
=60

the provision will last now=60*4/3
=80 days

Answer 2

The provision will last for 20 day

Solution:

Given that,

In a hostel there are 40 boys

They have provisions for 30 days

20 more boys join the hostel

Now, boys = 40 + 20 = 60

Let the provision will last for x days for 60 boys

Then, we can say,

$40 \times 30 = 60 \times x\\\\1200 = 60x\\\\x = 20$

Hence, the provision will last for 20 day.

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