Subject
NSI নিয়োগ
Topic
জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা (NSI) (সহকারী পরিচালক) - ০৮.১০.২০২১
If 12 men work on a particular task. It takes them 24 days to complete it. On the other hand 12 women can complete the same task in 12 days. How many days would it take if the 12 man and 12 women complete with each other to finish the same task?
If 12 men work on a particular task. It takes them 24 days to complete it. On the other hand 12 women can complete the same task in 12 days. How many days would it take if the 12 man and 12 women complete with each other to finish the same task?
ক)
5 daysখ)
6daysগ)
8 daysঘ)
16 daysExplanation
12 জন পুরুষ 24 দিনে করে 1 অংশ ∴ 12 জন পুরুষ 1 দিনে করে 1/24 অংশ আবার, 12 জন মহিলা 12 দিনে করে 1 অংশ ∴ 12 জন মহিলা 1 দিনে করে 1/12 অংশ তাহলে, 12 জন পুরুষ ও 12 জন মহিলা 1 দিনে করে = (1/24 + 1/12) অংশ = (1+2)/24 অংশ = 3/24 = 1/8অংশ তারা একত্রে 1/8 অংশ করে 1 দিনে ∴ তারা একত্রে 1 বা সম্পূর্ণ অংশ করে 1×8 = 8 দিনেRelated questions
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