It takes an inlet pipe of a small swimming pool 20 minutes less to fill the pool than it takes an outlet pipe of the same pool t
o empty it. through an error, starting with an empty pool, both pipes are left open and the pool is filled after 4 hours. how long does it take the inlet pipe to fill the pool and how long does it take the outlet pipe to empty it?
Congruent means identical (the same) so for Problem A you could put “they are congruent because they are identical shapes. I’m not exactly sure about Problem B