An empty rectangular container has a capacity of 33 ℓ and a height of 125 cm. At 8 a.m., Tap H is turned on to fill the container at a rate of 5 ℓ per minute for 17 minutes. After 8 minutes, Tap J is turned on to drain water from the container at a rate of 9 ℓ per minute for 9 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 
5 ℓ = 5000 cm³ 
9 ℓ = 9000 cm³ 
33 ℓ = 33000 cm³

Volume of water flowed in from Tap H
= 17 x 5000
= 85000 cm³

Volume of water from drained from Tap J
= 9 x 9000
= 81000 cm³

Volume of water left in the container
= 85000 - 81000
= 4000 cm³

Base area of the container
= 33000 ÷ 125
= 264 cm² 

Height of water left in the container
= 4000 ÷ 264
≈ 15.2 cm

Answer(s): 15.2 cm