If a man cycles at 10 km/hr, then he arrives at a certain place at 1 pm. If he cycles at 15 km/hr, he will arrive at the same place at 11 am. At what speed must he cycles to get there at noon?

which of the following equals ___ -?

Three measuring rods are 64 cm, 80 cm and 96 cm in length. what is the least length of cloth that can be measu...

A tank can be filled by a tap in 20 minutes and by another tap in 60 minutes . Both the taps are kept open for...

A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random form this box....

There is rectangular parking lot with a length of 2x and a width of x . what is the ratio of the perimeter of...

The ratio of income of A to that of B is 7 : 5 and the expenditure of A to that of B is 3 : 2 . If, at the end...