An empty rectangular container has a capacity of 90 ℓ and a height of 48 cm. At 7 a.m., Tap E is turned on to fill the container at a rate of 8 ℓ per minute for 15 minutes. After 12 minutes, Tap F is turned on to drain water from the container at a rate of 8 ℓ per minute for 14 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 
8 ℓ = 8000 cm³ 
90 ℓ = 90000 cm³

Volume of water flowed in from Tap E
= 15 x 8000
= 120000 cm³

Volume of water from drained from Tap F
= 14 x 8000
= 112000 cm³

Volume of water left in the container
= 120000 - 112000
= 8000 cm³

Base area of the container
= 90000 ÷ 48
= 1875 cm² 

Height of water left in the container
= 8000 ÷ 1875
≈ 4.3 cm

Answer(s): 4.3 cm