Question

The dimensions of a hall are $40$ m, $25$ m and $20$ m. If each person requires $200$ cubic metre, then the number of persons who can be accommodated in the hall are

• A. $150$
• B. $140$
• C. $120$
• D. $100$

Answer 1

The correct option is D $100$

We have the dimensions of the hall, then

Volume of hall $=40\times 25\times 20=20000$ cubic metre
One person requires $200$ cubic metre space.

If $n$ is the number of persons which can be accommodated in the hall, then
$\therefore n\times 200=20000$
$\therefore n=100$

Hence, option D is correct.