Multiple choice

Anju can do 3/4 of a job in 18 days. Prachi is twice as efficient as Anju. In how many days Prachi will complete the job? अंजू 18 दिनों में 3/4 कार्य कर सकती है। प्राची अंजू से दोगुनी कुशल है। प्राची कितने दिनों में काम पूरा करेगी?

  1. 12

  2. 10

  3. 8

  4. 16

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A Correct answer
Explanation

Anju completes 3/4 of job in 18 days, so full job takes 18 × 4/3 = 24 days. Prachi is twice as efficient, so Prachi takes 24/2 = 12 days. Efficiency is inversely proportional to time taken.