Airphone, Inc., manufactures cellular telephones at a processing cost of $51 per unit. The company produces an average of 230 phones per week and has a yield of 86% good-quality phones, resulting in 14% defective phones, all of which can be reworked. The cost of reworking a defective telephone is $17.
Compute the quality-productivity ratio (QPR)? (Round answer to 2 decimal places, e.g. 15.25.)