Subject
Quantitative Aptitude
Topic
Speed & Distance
A motorcyclist rode to work at an average speed of 15 miles per hour and returned home along the same route at an average speed of 45 miles per hour. If his entire traveling time was 1 hour, what was the total number of miles in the round trip?
A motorcyclist rode to work at an average speed of 15 miles per hour and returned home along the same route at an average speed of 45 miles per hour. If his entire traveling time was 1 hour, what was the total number of miles in the round trip?
ক)
15খ)
22(1/2)গ)
30ঘ)
36(1/2)ঙ)
45Explanation
QUESTION : একজন motorcyclist কাজে যাওয়ার সময় গড়ে 15 miles per hour বেগে এবং একই পথে বাড়ি ফেরার সময় গড়ে 45 miles per hour বেগে যাতায়াত করেন। যদি তার সম্পূর্ণ ভ্রমণের সময় 1 ঘণ্টা হয়, তাহলে round trip-এ মোট কত miles যাতায়াত করেছেন? সমাধান: -যাওয়া-আসার সময়ের সমীকরণ: x/15 + x/45 = 1 (যেখানে x হল একপাশের দূরত্ব) -সমীকরণ সমাধান করে পাই: x = 11.25 miles -Round trip দূরত্ব = 2 × 11.25 = 22.5 miles *সুতরাং, সঠিক উত্তর হল (B) 22 1/2 miles।Related 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-