After working for a total of 4 hours at a temporary job, you were told that you had just completed ¼ of the job. How long should it take you to finish the remaining part of the job?
A. 1 hour
B. 16 hour
C. 8 hour
D. 12 hour
Explanation: ধরা যাক, সম্পূর্ণ কাজ = ১ অংশ।\nপ্রশ্নানুযায়ী, ৪ ঘণ্টায় সম্পন্ন হয় = ১/৪ অংশ কাজ।\nসুতরাং, ১ অংশ কাজ সম্পন্ন করতে সময় লাগবে = \(4 \div \frac{1}{4} = 4 \times 4 = 16\) ঘণ্টা।\nবাকি কাজ = \(1 - \frac{1}{4} = \frac{3}{4}\) অংশ।\nবাকি কাজ (৩/৪ অংশ) সম্পন্ন করতে সময় লাগবে = \(\frac{16 \times 3}{4} = 4 \times 3 = 12\) ঘণ্টা।\nসুতরাং, বাকি কাজ শেষ করতে ১২ ঘণ্টা সময় লাগবে।
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