Multiple choice

Vivek can do a certain work in 14 days. Vishal is 75% more efficient than Vivek. How many days will Vishal alone take to do the same work?

  1. 8 days

  2. 9 days

  3. 10 days

  4. 6 days
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If Vivek takes 14 days, his efficiency is 1/14 work per day. Vishal is 75% more efficient, so his efficiency is 1.75 * (1/14) = (7/4) * (1/14) = 1/8. Thus, Vishal takes 8 days.

AI explanation

Vivek's daily work rate is 1/14. Since Vishal is 75% more efficient, Vishal's daily work rate is 1.75 times 1/14, which equals 1/8. Therefore, Vishal alone will complete the work in 8 days.

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