alleryঘণ্টাত 12 কিলোমিটাৰ বেগত চাইকেল আৰোহীয়ে 2 ঘণ্টাৰ অগ্ৰগতি লাভ কৰে। ঘণ্টাত 18 কিলোমিটাৰ বেগত এখন বাইক অনুসৰণ কৰে। কেচ-আপৰ সময়?
A3 ঘন্টা
B4 ঘন্টা
C6 ঘন্টা
D2 ঘন্টা
Answer & Solution
Correct answer: B. 4 ঘন্টা
চাইকেল আৰোহীৰ লিড 12 × 2 = 24 কিলোমিটাৰ আৰু বাইকখনে প্ৰতি ঘণ্টাত 18 − 12 = 6 কিলোমিটাৰ লাভ কৰে, 24 ÷ 6 = 4 ঘণ্টাত ধৰিব পাৰে।
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