Sarkari RiseLogin
SSC CHSL 2023 · PYQ · Time and Work · medium

Rahul alone can complete a work in 10 days and Sonu alone can complete the same work in 15 days. If they work together for 4 days, then what part of total work is left?

Answer

The correct answer is B: 1/3. Rahul's rate = 1/10 per day; Sonu's rate = 1/15 per day. Combined rate = 1/10+1/15 = 1/6 per day.

  1. A.1/5
  2. B.1/3✓ Correct
  3. C.2/5
  4. D.2/3

Explanation

Rahul's rate = 1/10 per day; Sonu's rate = 1/15 per day. Combined rate = 1/10+1/15 = 1/6 per day. Work done in 4 days = 4/6 = 2/3. Work remaining = 1 – 2/3 = 1/3.
💡 Practice unlimited SSC CHSL PYQs + AI-tracked progress on each topic. Sign up free →

More Time and Work questions

Want more SSC CHSL practice?

Free daily 10-Q quiz · adaptive mocks · 49,000+ practice questions (19,000+ verified PYQs) · AI doubt solver in Hindi + English

Sign up freeMore Time and Work practice