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Total marks of 15 students in 3 tests = 15×3×70 = 3150 Total marks in first test = 15×75 = 1125 Total marks in second test = 15×65 = 975 Total marks of 15 students in third test = 3150 – (1125+975) = 3150 – 2100 = 1050 Sum of top 5 scores in test 3 = 5×90 = 450 Remaining marks in third test = 1050 – 450 = 600 Average marks or remaining 10 students in third test = 600/10 = 60
Two cars start from a place with a speed of 60 km/hr at an interval of 15 minutes. What is the speed of a man coming from the opposite direction towards...
Two trains of same length are running in parallel tracks in the same direction with speed 60 km/hr and 90 km/hr respectively. The latter completely cros...
A train 450 metre long takes 60 sec to cross a man running at a speed of 7 km/hr in the direction opposite to that of train. What is the speed of the tr...
A train 300 metre long takes 30 sec to cross a man running at a speed of 6 km/hr in the direction opposite to that of train. What is the speed of the tr...
Shatabdi express leaves Delhi Junction at a certain time. After 5 hours, Garib Rath leaves the same station and travels in the same direction at a speed...
Two trains approach each other at 21 kmph and 24 kmph from 2 places 270 km apart. After how many hours they will meet?
Train P travelling at 58 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 32 km/hr in 14 seconds...
Calculate the speed of a train in meters per second if it covers a distance of 20 kilometers in 12 minutes.
Two trains approach each other at 20 kmph and 25 kmph from 2 places 225 km apart. After how many hours they will meet?
A train crosses a 250-metre-long platform in 18 seconds, and a tunnel 60% longer than the platform in 27 seconds. Find the speed of train in km/h.