An open rectangular tank that is 4 metre long, 2 metre wide, and 4.8 metre tall is initially three-quarters filled with water. What is the depth of water in the tank after 4,000 litres of water are added to it?

4.1 m

5 m

6.1 m

7.1

Explanation

tank volume 38.4 cu m=38400 l
3/4 full=38400 x 3/4=28800 l
add 4000lto 28800=32800l
32800/38400= .854 fll
tank 4,8 m tall x 854 current water level= 4.1 m depth of water