An empty rectangular container has a capacity of 48 ℓ and a height of 25 cm. At 8 a.m., Tap D is turned on to fill the container at a rate of 8 ℓ per minute for 16 minutes. After 15 minutes, Tap E is turned on to drain water from the container at a rate of 3 ℓ per minute for 18 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 
8 ℓ = 8000 cm³ 
3 ℓ = 3000 cm³ 
48 ℓ = 48000 cm³

Volume of water flowed in from Tap D
= 16 x 8000
= 128000 cm³

Volume of water from drained from Tap E
= 18 x 3000
= 54000 cm³

Volume of water left in the container
= 128000 - 54000
= 74000 cm³

Base area of the container
= 48000 ÷ 25
= 1920 cm² 

Height of water left in the container
= 74000 ÷ 1920
≈ 38.5 cm

Answer(s): 38.5 cm