An empty rectangular tank has a capacity of 152 ℓ and a height of 40 cm. At 7 a.m., Tap Z is turned on to fill the tank at a rate of 6 ℓ per minute for 16 minutes. After 10 minutes, Tap A is turned on to drain water from the tank at a rate of 5 ℓ per minute for 7 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 
6 ℓ = 6000 cm³ 
5 ℓ = 5000 cm³ 
152 ℓ = 152000 cm³

Volume of water flowed in from Tap Z
= 16 x 6000
= 96000 cm³

Volume of water from drained from Tap A
= 7 x 5000
= 35000 cm³

Volume of water left in the tank
= 96000 - 35000
= 61000 cm³

Base area of the tank
= 152000 ÷ 40
= 3800 cm² 

Height of water left in the tank
= 61000 ÷ 3800
≈ 16.1 cm

Answer(s): 16.1 cm