Multiple choice

A and B together can complete a work in 3 days.They started together but after 2 days. B left the work .If the work is completed after 2 more days, in how many days could B alone do the same work? A और B एक काम को 3 दिनों में कर सकते है। वे एक साथ काम करना प्रारम्भ करते है, लेकिन 2 दिन बाद B काम छोड़ देता है यदि काम 2 दिन बाद पूरा होता है तो B अकेला काम को कितने दिनों में पूरा कर सकता है?

  1. 5

  2. 6

  3. 7

  4. 10
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A + B do 1/3 work per day. After 2 days, 1/3 work remains, done by A alone in 2 days, so A's rate = 1/6 per day. B's rate = (1/3 - 1/6) = 1/6, so B alone takes 6 days.

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