Multiple choice

A can do a work in 8 days, B can do in 6 days and C can do in 8 days. First A and B started the work. After 3 days they gave up the work and C was engaged to complete the remaining work. How many days C takes to complete the remaining work? A एक काम को 8 दिनों में कर सकता है B, 6 दिनों में कर सकता है और C, 8 दिनों में कर सकता है। पहले A और B काम शुरू करते है। 3 दिनों बाद वे काम छोड़ देते हैं और C ने अकेले शेष काम को पूरा किया तो शेष काम पूरा करने में C को कितना समय लगा?

  1. 8 days/दिन

  2. 7 days/दिन

  3. 1 days/दिन

  4. 3 days/दिन
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A's rate = 1/8 per day, B's rate = 1/6 per day. Combined work for 3 days = 3 × (1/8 + 1/6) = 3 × 7/24 = 7/8. Remaining work = 1 - 7/8 = 1/8. C's rate = 1/8 per day. Time for C = (1/8) / (1/8) = 1 day. Option C is correct. Options A (8 days), B (7 days), and D (3 days) don't match this calculation.

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