Let efficiency of ‘A’ be ‘8x’ units per day Efficiency of ‘B’ = 1.375 × 8x = 11x units per day Total work = (11x + 8x) × 40 = (19x × 40) units Desired time = (19x × 40)/8x = 95 days
A and B are travelling towards each other with a speed of 10 km/hr and 20 km/hr. They started at same time and A covered 20 km less distance than B befo...
Buses A and B are moving around a circular ground of radius 350 m. If the speeds of the buses A and B are 15 m/sec and 20 m/sec respectively, then what ...
Some students went on a field trip. At a speed of 6 km/h, they traveled by bike for 2 hours then at a speed of 2 km/h, they walked for another hour; the...
A,B and C run around a Circular track starting from the same point simultaneously and in the same direction at the speed of 8 kmph, 12 kmph and 16 kmph ...
Barry and Iris set off simultaneously from point A, aiming to reach point B. Barry travels faster than Iris, with their speeds being in a ratio of 5:3. ...
Person 'A' left the college at 7 PM at 65% of the original speed. After 30 minutes, he reached the grocery store, picked up a bag...
A train travels from A to B at a speed of 60 km/h, and then from B to C at a speed of 80 km/h. The total distance covered from A to C is 240 km, and the...
The speed of a bike increases by 3 km/hr after every 1 hour. If the distance travelled by the bike in 1st hour is 22 km, the find the total distance tra...
A car travels a distance of200 km at the speed of 50 kmph. If it covers the ne×t 160 km of its journey at the speed of 80 kmph and last 80 km of i...
A train running at the speed of 35 metre per second crosses a bridge in 30 seconds. Another which is 130 metre shorter than the previous train crosses t...
