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Let the original number of faculties in Physics and Biology be 5x and 8x respectively According to the question, => (5x + 60)/(8x + 32) = 3/4 => 24x + 96 = 20x + 240 => x = 36 Original number of faculties = 5x + 8x = 13x = 13 × 36 = 468
A train has to cover a distance of 240 km in 20 hours. If it covers half journey in 3/5th time, then the speed of covering the remaining dist...
Average speed of ‘A’ during a 20-hour journey is 20 km/h. If he covered the first 200 km of his journey at a speed of 20 km/h, then find the speed a...
How much time a train 200 metres long running at the speed of 72 km/hr take to cross a bridge 180 metres in length?
A man first travels 140 km at 70 km/hr and next 140 km at 35 km/hr. The average speed for the first 280 km of his travelling is:
Two trains, A and B, are moving in opposite directions at speeds of 45 km/h and 60 km/h, respectively. The lengths of the trains are 120 meters and 150 ...
Train A departs from Delhi to Patna at 8:15 AM, traveling at an average speed of 15 m/s. Meanwhile, Train B leaves Patna for Delhi at 10:35 AM, moving a...
A boat travels from dock ‘M’ to dock ‘N’ at a constant speed. If its speed was increased by 8 km/h, it would have taken 4 hours less to cover th...
If a bus travel 15 km in 10 minute then how much time take if speed is decrease by 15 km/h?
Travelling at his usual speed, a man reaches his destination in 12 hours. If he reduces his speed by (1/6), then he covers 72 km less in the same time. ...
X started to run from point ‘A’ to ‘B’ at a speed of 32 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 16 km/...
