Proving the Sum of the Interior Angle Measures of a Triangle Is 180° This is my first question.
I suck at doing proofs in geometry so here is 20 points if you can complete the whole thing.

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

If a suspect is in possession of 20 grams of cocaine how many ounces does he possess what will the charge be