alleryএটা যাত্ৰাত স্থিৰ 60 km/h গতিত 120 km অতিক্ৰম কৰা হয়। লগা সময় হ'ল:
A1.5 ঘণ্টা
B2 ঘণ্টা
C2.5 ঘণ্টা
D3 ঘণ্টা
Answer & Solution
Correct answer: B. 2 ঘণ্টা
1. সময় হ'ল দূৰত্বক দ্ৰুতিৰে হৰণ কৰা ফল।
2. ইয়াত দূৰত্ব হ'ল 120 km আৰু দ্ৰুতি হ'ল 60 km per hour।
3. গতিকে সময় হ'ল 120 / 60।
4. সেইটো হ'ল 2 hours।
5. ওলোটা দিশৰ পৰা চালে, 2 hours-ৰ বাবে 60 km per hour গতিত 120 km অতিক্ৰম হয়।
_Source: syllabus Maths, Ch 11 'Direct and Inverse Proportions', S11.3 Inverse Proportion_
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