An empty rectangular container has a capacity of 39 ℓ and a height of 120 cm. At 6 a.m., Tap B is turned on to fill the container at a rate of 4 ℓ per minute for 17 minutes. After 8 minutes, Tap C is turned on to drain water from the container at a rate of 2 ℓ per minute for 26 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 
4 ℓ = 4000 cm³ 
2 ℓ = 2000 cm³ 
39 ℓ = 39000 cm³

Volume of water flowed in from Tap B
= 17 x 4000
= 68000 cm³

Volume of water from drained from Tap C
= 26 x 2000
= 52000 cm³

Volume of water left in the container
= 68000 - 52000
= 16000 cm³

Base area of the container
= 39000 ÷ 120
= 325 cm² 

Height of water left in the container
= 16000 ÷ 325
≈ 49.2 cm

Answer(s): 49.2 cm