This study aims to determine the influence of 4P's marketing mix on purchasing decisions. type research is quantitative. Data collection techniques using questionnaires. The number samples 100 respondents SPSS Statistics V.20. Based Partial Test, product has a significant effect decisions at UD. Rencana Baru store. indicated by t statistic > table (1,432 1,965) and less than 0,05 (0,155 <...