I'm trying to figure out how a formula to use to find the 3 correct percentages.

The quality control division evaluated reliability of a new cell phone model. In a random sampling of phones packaged and ready to ship to stores, the divisionfound 28 did not turn on, 112 had minor software issues, and 735 had all desired functionality.

What is a reasonable probability model for the quality of the cell phones that were sent to stores?

Match each description with the correct amount,

Will not turn on

Will function as advertised

Will require minor software fixes

5.2%, 3.2%, 85%, 3.8%, 73.5%, 11.2%, 12.8%