35 of a tank is filled with water. Another 108 litres of water are needed to fill the tank to its brim.
- What is the volume of the tank in mℓ?
- The height of the tank is 36 cm and its breadth is 50 cm. Find the perimeter of its base.
(a)
Fraction of the tank not filled with water = 1 -
35 =
25 25 of the tank = 108 ℓ
15 of the tank = 108 ÷ 2 = 54 ℓ
55 of the tank = 54 x 5 = 270 ℓ
270 ℓ = 270000 mℓ
(b)
Length of the tank
= 270000 ÷ (36 x 50)
= 150 cm
Perimeter of the base
= (150 + 50) x 2
= 400 cm
Answer(s): (a) 270000 mℓ; (b) 400 cm