A and B together do a work in 15 days.If A alone can do it in 18 days,how long will B take to do the same work? Share with your friends Share 0 Rishabh Mittal answered this Dear Student , Here is the similar link for your query : https://www.meritnation.com/ask-answer/question/sony-and-ranu-together-can-do-a-piece-of-work-in-20-days-s/direct-and-inverse-proportions/3862598 We hope the above link will help you in clearing the doubt . Regards -1 View Full Answer