Need Help with Related Rates

[Gmarie15]

A swimming pool is 12 meters long, 6 meters wide,
1 meter deep at the shallow end, and 3 meters deep at the deep
end. Water is being pumped into the
pool at 1/4 cubic meter per minute, and there is 1 meter of water
at the deep end.
(a) What percent of the pool is filled?
(b) At what rate is the water level rising?

 

[stapel]

A swimming pool is 12 meters long, 6 meters wide, 1 meter deep at the shallow end, and 3 meters deep at the deep
end (see figure on next page). Water is being pumped into the pool at [gap in post] cubic meter per minute, and there is 1 meter of water
at the deep end.
(a) What percent of the pool is filled?
(b) At what rate is the water level rising?

What does the "figure on next page" show? What is the pump's rate? (The info didn't transfer when you did your copy-n-paste from your assignment.)

What are your thoughts? What have you tried? How far have you gotten? Where are you stuck?

Please be complete. Thank you!