Hi everyone,
I encountered this math question during one of my interviews and apparently I got it wrong. I asked the interviewer but she didn't tell me what the correct answer was. It's still bugging me. Can someone please help to solve the question below:
An e-commerce website tries to improve its revenue by sending out recommendations for next purchase based on historical data of a customer's previous purchases. The website sends recommendations to 1.5 million customers at the cost of $2/message. The recommendation system costs $2 million/year to maintain. Each customer spends $600/year on average on the site. The site targets to have $3 in revenue for every $1 cost -→ How many recommendations need to result in 1 purchase to achieve the target above?
Thanks everyone so much for helping!