or
or
প্রশ্নে বলা হচ্ছে যে, 20 জন লোক একটি কাজ 30 দিনে শেষ করতে পারে। প্রশ্ন হল কত দিন পরে 5 জন লোক চলে গেলে কাজটি 35 দিনে শেষ হবে?
Total work=20 x 30 = 600 days
That means if single worker worked on it, it would take him 600 days to finish the work. Let x be the number of days after which 5 workers leave.
Now if 20 workers work for x days
And then 5 leave, so now 15 workers work for the rest (35-x) days to finish the work.
So equation should be
Total work done by 20 workers in 30 days = total work done by 20 workers for x days and 15 workers for (35-x) days.
This means,
ans. 5 workers must leave after 15 days for the project to complete it 35 days.
আপনি আমাকে যেকোনো প্রশ্ন করতে পারেন, যেমনঃ
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