An e-commerce company tracks its customer transactions to analyze the effectiveness of its retention strategies.
In January 2025, the company had 2,000 transactions, of which 1,200 were made by customers who had previously shopped before January 2025.
Of these 1,200 repeat orders, 250 purchases were made by 200 customers that were acquired in December 2024. There were 500 new customers in December 2024.
Calculate the repeat rate for the month of January 2025 and the M-1 customer retention rate for the December 2024 cohort.