The figure is not drawn to scale. Tank F measuring 48 cm by 41 cm by 22 cm contained 26.68 ℓ of water. Tank G measuring 40 cm by 25 cm by 34 cm contained 22 ℓ of water. Rael poured some water from Tank F into Tank G without spilling and the water level of Tank G rose to 29 cm. What was the height of water level left in Tank F?
1 ℓ = 1000 cm³
22 ℓ = 22000 cm³
26.68 ℓ = 26.68 x 1000 = 26680 cm³

Height of water in Tank G at first
= 22000 ÷ 40 ÷ 25
= 22 cm

Increase in the height of water in Tank G
= 29 - 22
= 7 cm

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

Volume of water left in Tank F
= 26680 - 7000
= 19680 cm³ 

Height of water left in Tank F
= 19680 ÷ 48 ÷ 41
= 10 cm

Answer(s): 10 cm