Question

75 persons can sleep in a room 25 m by 9.6 m. If each person requires 16 m³ of the air; find the height of the room. 

Answer 1

Let h be the height of the room.

1 person requires 16 m³

75 person requires  75 x 16 m³ =  1200 m³

Volume of the room is 1200 m³

1200 = 25 x 9.6 x h

h = `( 1200 )/( 25 xx 9.6 )`

h = 5 m