Subject
Quantitative Aptitude
Topic
Speed & Distance
An airplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1(2/3)hours, it must travel at a speed of ( একটি উড়োজাহাজ একটি নির্দিষ্ট দূরত্ব 240 kmph বেগে 5 ঘন্টা অতিক্রম করে । ঐ দূরত্ব1(2/3)ঘন্টায় অতিক্রম করতে হলে উড়োজাহাজটির বেগ কত হতে হবে?)
An airplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1(2/3)hours, it must travel at a speed of ( একটি উড়োজাহাজ একটি নির্দিষ্ট দূরত্ব 240 kmph বেগে 5 ঘন্টা অতিক্রম করে । ঐ দূরত্ব1(2/3)ঘন্টায় অতিক্রম করতে হলে উড়োজাহাজটির বেগ কত হতে হবে?)
ক)
300 kmphখ)
360 kmphগ)
600 kmphঘ)
720 kmphExplanation
240 km/h বেগে 5 ঘন্টায় ভ্রমণ করে = 240×5 km = 1200 km 1200 km পথ 1 (2/3) ঘন্টা বা (5/3) ঘন্টায় অতিক্রম করতে বেগ = দূরত্ব/সময় = [1200 km/(5/3) hrs} = 720 kmphRelated questions
A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:Speed of a boat in standing water is 9 kmph and the speed of the stream is 5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is:two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1/10 km and 9 km respectively. The time taken by slower train to cross the faster train in seconds is -A man can row three-quarters of a kilometre against the stream in 11×(1/4) minutes and down the stream in 7×(1/2) minutes. The speed (in km/hr) of the man in still water is:In a 300 m race A beats B by 5 metre or 6 seconds. B's time over the course is -A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?A boat covers a certain distance downstream in 1 hour, while it comes back in 1x(1/2) hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water?A man buys tk 20 shares paying 9% dividend. The man wants to have an interest of 12% on his money. The market value of each share is-