The figure is not drawn to scale. Tank K measuring 54 cm by 41 cm by 25 cm contained 23.54 ℓ of water. Tank L measuring 40 cm by 35 cm by 32 cm contained 35 ℓ of water. Will poured some water from Tank K into Tank L without spilling and the water level of Tank L rose to 26 cm. What was the height of water level left in Tank K?
1 ℓ = 1000 cm³
35 ℓ = 35000 cm³
23.54 ℓ = 23.54 x 1000 = 23540 cm³

Height of water in Tank L at first
= 35000 ÷ 40 ÷ 35
= 25 cm

Increase in the height of water in Tank L
= 26 - 25
= 1 cm

Volume of water poured into Tank L
= 40 x 35 x 1
= 1400 cm³ 

Volume of water left in Tank K
= 23540 - 1400
= 22140 cm³ 

Height of water left in Tank K
= 22140 ÷ 54 ÷ 41
= 10 cm

Answer(s): 10 cm