An empty rectangular tank has a capacity of 24 ℓ and a height of 200 cm. At 7 a.m., Tap G is turned on to fill the tank at a rate of 3 ℓ per minute for 19 minutes. After 8 minutes, Tap H is turned on to drain water from the tank at a rate of 2 ℓ per minute for 17 minutes. What is the height of the water level in the tank in the end? Give the answer in 1 decimal place.
1 ℓ = 1000 cm³ 
3 ℓ = 3000 cm³ 
2 ℓ = 2000 cm³ 
24 ℓ = 24000 cm³

Volume of water flowed in from Tap G
= 19 x 3000
= 57000 cm³

Volume of water from drained from Tap H
= 17 x 2000
= 34000 cm³

Volume of water left in the tank
= 57000 - 34000
= 23000 cm³

Base area of the tank
= 24000 ÷ 200
= 120 cm² 

Height of water left in the tank
= 23000 ÷ 120
≈ 191.7 cm

Answer(s): 191.7 cm