The figure is not drawn to scale. Tank K measuring 52 cm by 46 cm by 25 cm contained 27.16 ℓ of water. Tank L measuring 40 cm by 27 cm by 32 cm contained 27 ℓ of water. Vaidev poured some water from Tank K into Tank L without spilling and the water level of Tank L rose to 28 cm. What was the height of water level left in Tank K?
1 ℓ = 1000 cm³
27 ℓ = 27000 cm³
27.16 ℓ = 27.16 x 1000 = 27160 cm³

Height of water in Tank L at first
= 27000 ÷ 40 ÷ 27
= 25 cm

Increase in the height of water in Tank L
= 28 - 25
= 3 cm

Volume of water poured into Tank L
= 40 x 27 x 3
= 3240 cm³ 

Volume of water left in Tank K
= 27160 - 3240
= 23920 cm³ 

Height of water left in Tank K
= 23920 ÷ 52 ÷ 46
= 10 cm

Answer(s): 10 cm