Aarti can do a piece of work in 6 days. In how many days will she complete three time of work of same type?
Select.
A) 6 days B) 18 days C) 21 days D) 3 days E) 13 days

Rationale: "we have the important relation , more work , more time ( days ) a piece of work can be done in 6 days . three times of work of same type can be done in 6 x 3 = 18 days answer b"
Answer: B