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Total work done by 28 men and 40 women is equal. Therefore, efficiency of men and women 28 × M × 20 = 40 × W × 28 M : W = 2 : 1 Let Total work = 28 × 2 × 20 = 1120 unit Work done by 20 men and 12 women in 16 days = (20 × 2 + 12 × 1) × 16 = 832 unit Remaining work = 1120 – 832 = 288 unit Total Efficiency (inclusive of 20 women) = 52 + (20 × 1) = 72 Remaining work done in = 288/72 = 4 days
Train A running at a speed of 46 km/hr. crosses train B in 30 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B i...
If the product of roots of equation x2 - 3(2p+4)x + (p2 - 24p + 145) = 0 is unity, then 'p' can take the values as
A train of length 260 m crosses another train of length 120 m running is opposite direction in 5 sec. If speed of longer train is 90 km/h, then in what ...
Two trains of lengths 100 m and 90 m are running with speeds of 60 km/hr and 57 km/hr respectively towards each other on parallel lines. If they are 70 ...
The main folder on a storage device is known as
Open, print and save button are all located on_____________
Two places X and Y are 450 km apart. A truck leaves place X from place Y and at the same time another truckleaves placeY to X. Both the men meet 9 hours...
A and B are the roots of equation x2 - 13x + k = 0. If A - B = 5, what is the value of k?
The downstream speed of a boat is 4 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
If x and y are the roots of x2 + x + 3 = 0, then (x11 + y11)/(x-11 + y-11) is equal to:
