Rafia ran from her house to school at an… | Answer

Subject

Quantitative Aptitude

Topic

Speed & Distance

Rafia ran from her house to school at an average speed of 6 miles per hour and returned along the same route at an average speed of 4 miles per hour. If it took her one hour in total to run to the school and come back, how many minutes did it take her to run from her house to school?
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Explanation

suppose, distance=D we know, time=distance/speed at time of going=D/6 t time of coming=D/4 here, D/6+D/4=1 or,D=12/5 miles goes 1 mile in 1/6 hour goes 12/5 milein 1/6 x 12/5 hour=2/5 hour =24 minutes

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-

Rafia ran from her house to school at an average speed of 6 miles per hour and returned along the same route at an average speed of 4 miles per hour. If it took her one hour in total to run to the school and come back, how many minutes did it take her to run from her house to school?Reading

Rafia ran from her house to school at an average speed of 6 miles per hour and returned along the same route at an average speed of 4 miles per hour. If it took her one hour in total to run to the school and come back, how many minutes did it take her to run from her house to school?

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Rafia ran from her house to school at an average speed of 6 miles per hour and returned along the same route at an average speed of 4 miles per hour. If it took her one hour in total to run to the school and come back, how many minutes did it take her to run from her house to school?
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