Question

A and B together can do a work in 10 days. C can destroy the same work in 28 days. A and B started the work and work for 12 days simultaneously and C started with them for destroying the work for same 12 days. After that A and C leaves and B completes the remaining work in 4 days. In how many days A alone can complete the same work?​

Answer 1

Answer is answer it can answer but I don't know answer