The figure is not drawn to scale. Tank R measuring 48 cm by 44 cm by 19 cm contained 29.12 ℓ of water. Tank S measuring 40 cm by 25 cm by 37 cm contained 19 ℓ of water. Jeremy poured some water from Tank R into Tank S without spilling and the water level of Tank S rose to 27 cm. What was the height of water level left in Tank R?
1 ℓ = 1000 cm³
19 ℓ = 19000 cm³
29.12 ℓ = 29.12 x 1000 = 29120 cm³

Height of water in Tank S at first
= 19000 ÷ 40 ÷ 25
= 19 cm

Increase in the height of water in Tank S
= 27 - 19
= 8 cm

Volume of water poured into Tank S
= 40 x 25 x 8
= 8000 cm³ 

Volume of water left in Tank R
= 29120 - 8000
= 21120 cm³ 

Height of water left in Tank R
= 21120 ÷ 48 ÷ 44
= 10 cm

Answer(s): 10 cm