Question
Quantitative Aptitude Question on Time and Work
If P, Q and R work together, they take 12 days to complete the work. However, if only P and R work, they take 20 days to complete the work. A schedule is made such that P and R work every day, while Q joins them only on alternate days i.e. on 1st, 3rd, 5th, 7th,… days. On which day will the work be completed?
A
15th
B
14th
C
13th
D
17th
Answer
15th
Explanation
Solution
The correct answer is (A),15th