An empty rectangular container has a capacity of 126 ℓ and a height of 48 cm. At 8 a.m., Tap N is turned on to fill the container at a rate of 10 ℓ per minute for 19 minutes. After 11 minutes, Tap P is turned on to drain water from the container at a rate of 6 ℓ per minute for 20 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 
126 ℓ = 126000 cm³

Volume of water flowed in from Tap N
= 19 x 10000
= 190000 cm³

Volume of water from drained from Tap P
= 20 x 6000
= 120000 cm³

Volume of water left in the container
= 190000 - 120000
= 70000 cm³

Base area of the container
= 126000 ÷ 48
= 2625 cm² 

Height of water left in the container
= 70000 ÷ 2625
≈ 26.7 cm

Answer(s): 26.7 cm