UPSC Prelims 2023 · CSAT (Paper 2) · Q20

Basic Numeracy

Hard · Time and work

P, Q and R working independently can complete a piece of work in 10, 15 and 30 days respectively. P alone works on Monday, Q alone works on Tuesday, R alone works on Wednesday; P alone works again on Thursday, and so on in that order. Consider the following statements:

1. The work will be finished on a Monday.

2. The work will be finished in 12 days.

Which of the above statements is/are correct?