The figure is not drawn to scale. Tank V measuring 55 cm by 46 cm by 24 cm contained 14.59 ℓ of water. Tank W measuring 40 cm by 25 cm by 32 cm contained 24 ℓ of water. Peter poured some water from Tank V into Tank W without spilling and the water level of Tank W rose to 31 cm. What was the height of water level left in Tank V?
1 ℓ = 1000 cm³
24 ℓ = 24000 cm³
14.59 ℓ = 14.59 x 1000 = 14590 cm³

Height of water in Tank W at first
= 24000 ÷ 40 ÷ 25
= 24 cm

Increase in the height of water in Tank W
= 31 - 24
= 7 cm

Volume of water poured into Tank W
= 40 x 25 x 7
= 7000 cm³ 

Volume of water left in Tank V
= 14590 - 7000
= 7590 cm³ 

Height of water left in Tank V
= 7590 ÷ 55 ÷ 46
= 3 cm

Answer(s): 3 cm