The figure is not drawn to scale. Tank V measuring 54 cm by 46 cm by 20 cm contained 31.84 ℓ of water. Tank W measuring 40 cm by 25 cm by 32 cm contained 20 ℓ of water. Cody poured some water from Tank V into Tank W without spilling and the water level of Tank W rose to 27 cm. What was the height of water level left in Tank V?
1 ℓ = 1000 cm³
20 ℓ = 20000 cm³
31.84 ℓ = 31.84 x 1000 = 31840 cm³

Height of water in Tank W at first
= 20000 ÷ 40 ÷ 25
= 20 cm

Increase in the height of water in Tank W
= 27 - 20
= 7 cm

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

Volume of water left in Tank V
= 31840 - 7000
= 24840 cm³ 

Height of water left in Tank V
= 24840 ÷ 54 ÷ 46
= 10 cm

Answer(s): 10 cm