An empty rectangular tank has a capacity of 44 ℓ and a height of 200 cm. At 10 a.m., Tap V is turned on to fill the tank at a rate of 9 ℓ per minute for 17 minutes. After 9 minutes, Tap W is turned on to drain water from the tank at a rate of 2 ℓ per minute for 10 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 
9 ℓ = 9000 cm³ 
2 ℓ = 2000 cm³ 
44 ℓ = 44000 cm³

Volume of water flowed in from Tap V
= 17 x 9000
= 153000 cm³

Volume of water from drained from Tap W
= 10 x 2000
= 20000 cm³

Volume of water left in the tank
= 153000 - 20000
= 133000 cm³

Base area of the tank
= 44000 ÷ 200
= 220 cm² 

Height of water left in the tank
= 133000 ÷ 220
≈ 604.5 cm

Answer(s): 604.5 cm