এক ব্যক্তি স্রোতের অনুকূলে নৌকা বেঁয়ে ঘণ্টায় ১০ কিঃমিঃ বেগে চলে কোন স্থানে গেল এবং ঘণ্টায় ৬ কিঃমিঃ বেগে স্রোতের প্রতিকূলে চলে যাত্রারম্ভের স্থানে ফিরে এল,যাতায়াতে তার গড় গতিবেগ ঘণ্টায় কতো কিঃমিঃ ?
A৫.৫
B৬.৫
C৭.৫
D৮.৫
Answer: C - ৭.৫
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Train X leaves Dhaka at 10;00 AM and travels East at a constant speed of x miles per hour. If another Train Y leaves Dhaka at 11:30 Am and travels east along the same tracks at speed 4x/3, then at what time will Train Y catch Train X ?
A1 PM same day
B2 PM same day
C4 PM same day
D6 PM same day
Answer: C - 4 PM same day
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An express train traveled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the staring point?
A6 hrs 21 min
B6 hrs 24 min
C6 hrs 27 min
D6 hrs 30 min
Answer: A - 6 hrs 21 min
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A train 120 meter long is traveling at a speed of 60 km/h. The time in which it will pass a passersby, walking at 6 km/h in the same direction is _____
A3 sec
B6 sec
C8 sec
D9 sec
Answer: C - 8 sec
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A delivery cart went from Candle ford to Lark Rise and back at an average speed of $\tfrac{2}{3}$ miles per hour. If the distance from Candle ford to Lark Rise is 1 mile, and the trip back took half as much time as the trip there, what was the average speed of the delivery cart of the way to Lark Rise?
A$\tfrac{1}{2}$
B$\tfrac{1}{3}$
C$\tfrac{2}{3}$
D$\tfrac{3}{4}$
Answer: A - $\tfrac{1}{2}$
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Karim traveled 60 miles from Dhaka to Gazipur at a certain speed, If his speed per hour were 2 miles faster, he would need I hour less to reach Gazipur. What was his initial speed ?
A10 miles per hour
B12 miles per hour
C15 miles per hour
D8 miles per hour
Answer: A - 10 miles per hour
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