A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work?
A. 5 days
B. 6 days
C. 8 days
D. 9 days
Answer:B
A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work?
A. 5 days B. 6 days C. 8 days D. 9 days