Geometry 4
Please need help badly

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer