Question

In a two-month survey of shoppers, each shopper bought one of two brands of detergent, x or y, in the first month and again bought one of these brands in the second month. In the survey, 90 percent of the shoppers who bought brand x in the first month bought brand x again in the second month, while 60 percent of the shoppers who bought brand y in the first month bought brand y again in the second month. What percent of the shoppers bought brand y in the second month? In the first month, 50 percent of the shoppers bought brand x. The total number of shoppers surveyed was 5,000.

Answer 1

sorry I can't
how solve it please tell me the process