25 of a tank is filled with water. Another 102 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 34 cm and its breadth is 50 cm. Find the perimeter of its base.
(a)
Fraction of the tank not filled with water = 1 -
25 =
35 35 of the tank = 102 ℓ
15 of the tank = 102 ÷ 3 = 34 ℓ
55 of the tank = 34 x 5 = 170 ℓ
170 ℓ = 170000 mℓ
(b)
Length of the tank
= 170000 ÷ (34 x 50)
= 100 cm
Perimeter of the base
= (100 + 50) x 2
= 300 cm
Answer(s): (a) 170000 mℓ; (b) 300 cm