Multiple choice

A is twice as good as B and B takes 12 more days to do a work. In how many days both will complete the work? A, B से दो गुना कुशल है तथा B, A से 12 दिन ज्यादा लेता है । दोनों व्यक्ति उस कार्य को कितने दिनों में कर लेगे?

  1. 4 days/दिन

  2. 8 days/दिन

  3. 10 days/दिन

  4. 6 days/दिन
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If A is twice as efficient as B, and takes x days, B takes 2x days. Given: 2x - x = 12, so x = 12. A takes 12 days, B takes 24 days. Together in one day: 1/12 + 1/24 = 3/24 = 1/8. So they complete the work in 8 days.

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