An empty rectangular container has a capacity of 66 ℓ and a height of 100 cm. At 8 a.m., Tap U is turned on to fill the container at a rate of 10 ℓ per minute for 16 minutes. After 14 minutes, Tap V is turned on to drain water from the container at a rate of 6 ℓ per minute for 22 minutes. What is the height of the water level in the container in the end? Give the answer in 1 decimal place.
1 ℓ = 1000 cm³ 
10 ℓ = 10000 cm³ 
6 ℓ = 6000 cm³ 
66 ℓ = 66000 cm³

Volume of water flowed in from Tap U
= 16 x 10000
= 160000 cm³

Volume of water from drained from Tap V
= 22 x 6000
= 132000 cm³

Volume of water left in the container
= 160000 - 132000
= 28000 cm³

Base area of the container
= 66000 ÷ 100
= 660 cm² 

Height of water left in the container
= 28000 ÷ 660
≈ 42.4 cm

Answer(s): 42.4 cm