alleryସୀତା ଏକ କାମକୁ 30 ଦିନରେ କରେ। ସୀତା ଏବଂ ତାରା ଏକତ୍ର ଏହାକୁ 20 ଦିନରେ କରନ୍ତି। କେବଳ ତାରାକୁ ଆବଶ୍ୟକ ହେବ
A40 ଦିନ
B45 ଦିନ
C50 ଦିନ
D60 ଦିନ
Answer & Solution
Correct answer: D. 60 ଦିନ
ତାରାର ହାର ହେଉଛି 1/20 - 1/30 = 1/60, ତେଣୁ ତାଙ୍କୁ 60 ଦିନ ଆବଶ୍ୟକ।
Keep practising Time and Work
Browse all Time and Work questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
What labor metric denotes the amount of work done by an average worker in a day?How is task time found from man-hours and worker count?If a task requires 20 man-hours, how many hours will a team of 2 workers take?A takes 12 days and B takes 24 days. A leaves 3 days before the work ends. Total time wasA does a job in 16 days, B in 8 days. A works 4 days alone, then B joins. Total time from A alone does a job in 9 days and B alone in 18 days. They earn Rs 900 together. A's share A pipe alone fills a tank in 15 minutes; with a second pipe it takes 6 minutes. The secondTen men working 8 hours a day build a wall in 18 days. Twelve men at 6 hours a day need