Multiple choice

Two workers A and B can do a piece of work in 16 days and 24 days respectively. If both started to work and A left the work after 2 days, then in how many days the remaining work is completed by B. दो श्रमिक A और B क्रमशः 16 दिन और 24 दिनों में एक काम कर सकते हैं। यदि दोनों ने काम करना शुरू कर दिया और A ने 2 दिन बाद काम छोड़ दिया, तो कितने दिनों में शेष कार्य B द्वारा पूरा किया जाता है।

  1. 24 days

  2. 20 days

  3. 21 days

  4. 19 days

  5. 23 days

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A's work rate is 1/16 per day, B's is 1/24 per day. Together for 2 days: 2×(1/16 + 1/24) = 2×(5/48) = 5/24. Remaining work: 1 - 5/24 = 19/24. B completes this alone in (19/24) ÷ (1/24) = 19 days, which matches option D.