Question

A can finish a piece of work in 15 days of 8 hours, B can Finish it in 6⅔ of 9 hours. Find in how many days they can finish it together, If they works 10 hour a day.

Please explain these answer ..​

Answer 1

finish a piece of work in 15 day=8 hours

B can finish 6days 12 hours=9 hours

then 10 hours a day= 8 hours