Subject
Quantitative Aptitude
Topic
Speed & Distance
A train travels at the speed of 65 km/hr and halts at 8 junctions for a certain time. It covers a distance of 1300 km in 1 day ( 24 hours). How long dose the train stop at each junction, if it halts for the same period of time at all the junctions?(একটি ট্রেন 65 কি.মি./ঘন্টা গতিতে চলে এবং 8টি জংশনের 1300 কি.মি. দূরত্ব অতিক্রম করতে পারে । তাহলে, ট্রেনটি প্রতিটি জংশনে কতক্ষন সময়ের জন্য থামে ? )
A train travels at the speed of 65 km/hr and halts at 8 junctions for a certain time. It covers a distance of 1300 km in 1 day ( 24 hours). How long dose the train stop at each junction, if it halts for the same period of time at all the junctions?(একটি ট্রেন 65 কি.মি./ঘন্টা গতিতে চলে এবং 8টি জংশনের 1300 কি.মি. দূরত্ব অতিক্রম করতে পারে । তাহলে, ট্রেনটি প্রতিটি জংশনে কতক্ষন সময়ের জন্য থামে ? )
ক)
20 minutesখ)
30 minutesগ)
40 minutesঘ)
60 minutesExplanation
ট্রেনটির বেগ = 65 km/hr মোট দূরত্ব = 1300 km ∴ কোন বিরতি ছাড়া চললে ট্রেনটির ঐ দূরত্ব অতিক্রম করতে সময় লাগে = (1300/65 ) hr = 20 hrs যেহেতু ট্রেনটির বিরতিসহ ঐ দূরত্ব অতিক্রম করতে মোট 24 ঘন্টা সময় লাগে, সেহেতু মোট বিরতি = ( 24-20 ) hrs = 4 hrs ∴ 8 টি বিরতির প্রত্যেক বিরতির সময় = 4 hrs/8 = 1/2 hrs = (1/2)×60 minutes = 30 minutes .Related questions
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