The figure is not drawn to scale. Tank N measuring 52 cm by 46 cm by 25 cm contained 14.52 ℓ of water. Tank P measuring 40 cm by 32 cm by 37 cm contained 32 ℓ of water. Mark poured some water from Tank N into Tank P without spilling and the water level of Tank P rose to 27 cm. What was the height of water level left in Tank N?
1 ℓ = 1000 cm³
32 ℓ = 32000 cm³
14.52 ℓ = 14.52 x 1000 = 14520 cm³

Height of water in Tank P at first
= 32000 ÷ 40 ÷ 32
= 25 cm

Increase in the height of water in Tank P
= 27 - 25
= 2 cm

Volume of water poured into Tank P
= 40 x 32 x 2
= 2560 cm³ 

Volume of water left in Tank N
= 14520 - 2560
= 11960 cm³ 

Height of water left in Tank N
= 11960 ÷ 52 ÷ 46
= 5 cm

Answer(s): 5 cm