Home › MCQs › Basic Mathematics › Question #2846
Back to Questions
Basic Mathematics QUESTION #2846
Question 1
A can complete a work in 12 days and B in 18 days. How many days will they take working together?
  • 6 days
  • 7.2 days✔️
  • 8 days
  • 9 days
Correct Answer Explanation
A's one day work \(= \dfrac{1}{12}\), B's one day work \(= \dfrac{1}{18}\). Together: \(\dfrac{1}{12} + \dfrac{1}{18} = \dfrac{3+2}{36} = \dfrac{5}{36}\). Days taken \(= \dfrac{36}{5} = 7.2\) days.