If 9 examiners can examine a certain number of answer books in 12 days, working 5 hours a day; for how many hours a day would 4 examiners have to work in order to examine twice the number of answer book is 30 days?
Created: 6 years ago |
Updated: 3 years ago
best des
Hints: 9 examiners in 12 days × books working 5 hr/day
1 examiners in 1 days 5×9×12 hr/day
4 examiners in 30 days 2x = (5×9×12×2)/(4×30) = 9 hr/day
Md Azizur Rahman
Founder of Satt
ঐকিক নিয়ম (Unitary Methods):
একটি জিনিসের দাম, ওজন, পরিমাণ ইত্যাদি বের করে নির্দিষ্ট সংখ্যক এই জাতীয় জিনিসের দাম, ওজন, পরিমাণ ইত্যাদি বের করার নিয়মকে ঐকিক নিয়ম বলে।
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