allery100 কিলোমিটাৰৰ বাবে এখন গাড়ীয়ে ঘণ্টাত 20 কিলোমিটাৰৰ পৰা 25% গতি বৃদ্ধি কৰে। সময় ৰাহি হ’ল?
A1/4 ঘন্টা
B1/2 ঘন্টা
C1 ঘন্টা
D2 ঘন্টা
Answer & Solution
Correct answer: C. 1 ঘন্টা
নতুন গতিবেগ 25 km/h, যাৰ ফলত যাত্ৰাৰ সময় 100 ÷ 20 = 5 ঘণ্টাৰ পৰা 100 ÷ 25 = 4 ঘন্টালৈ হ্ৰাস পায় আৰু 1 ঘণ্টা ৰাহি হয়।
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