I was asked to solve the following problem on my test:
A tank is filled up to height H with a liquid having specific gravity 1.6. The rest of the tank is filled with air. A pressure gauge attached on top of the tank measures the pressure to be 11.5 m of water and another pressure gauge attached at the bottom of the tank reads 16.8 m of water. Now, what is the value of H?
I don't know where to start. I have solved U tube manometer problems but never faced something like this one. I don't have a single clue. Even the total height of the tank is also not given. Is it really possible to solve the problem with only single data (the SG of the liquid) ? What do you think?