Multiple choice

Prakash is thrice as good as Neeraj. They together can do a job in 16 days, in how many days will Neeraj finish the work alone?

  1. 46 days

  2. 52 days

  3. 64 days

  4. 68 days

  5. 72 days

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

If Prakash is thrice as efficient as Neeraj, let Neeraj's efficiency = 1 unit/day, then Prakash's = 3 units/day. Combined efficiency = 4 units/day. Total work = 4 × 16 = 64 units. Neeraj alone = 64/1 = 64 days. The distractors 52, 68, and 72 days come from incorrect ratio setups or calculation errors.