alleryএকজন রাজমিস্ত্রি 8 দিনে একটি প্রাচীরের 40% সম্পন্ন করেন। এই গতিতে পুরো প্রাচীরটি তৈরি করতে সময় লাগবে
A20 দিন
B32 দিন
C16 দিন
D24 দিন
Answer & Solution
Correct answer: A. 20 দিন
যদি 40% করতে 8 দিন লাগে, তবে 1% করতে লাগে 0.2 দিন, সুতরাং 100% করতে লাগে 20 দিন।
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