35 of a tank is filled with water. Another 116 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 40 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 = 116 ℓ
15 of the tank = 116 ÷ 2 = 58 ℓ
55 of the tank = 58 x 5 = 290 ℓ
290 ℓ = 290000 mℓ
(b)
Length of the tank
= 290000 ÷ (40 x 50)
= 145 cm
Perimeter of the base
= (145 + 50) x 2
= 390 cm
Answer(s): (a) 290000 mℓ; (b) 390 cm