Two trains 128 meters and 122 meters long are running towards each other on parallel lines at 48 kmph and 42 kmph respectively. In what time will they clear off each other from the moment they meet?

If a 12 meter rod is cut into 25 equal pieces, what is the length of each piece?

A, B and C started a business with their investments in the ratio 1 : 2 : 4 . After 6-month A invested the half amount more as before and B invested same the amount as before while C withdrew $$1\over 4$$th of the his investments. Find the ratio of their profits at the end of the year. 

If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is : 

If sinθ + cosecθ = 2, then the value of $$ sin^9 θ +cosec^9θ $$ is –

A shopkeeper earns a profit of 25 percent on selling a radio at 15 percent discount on the Printed price. Finds the ratio of the Printed price and the cost price of the radio.

Marked price of an item is Rs 200. On purchase of 1 item discount is 22 % on purchase of 4 items discount is 33 % Rabia buys 5 items, what is the effective discount? 

A train passes two bridges of length 400 m and 200 m. in 50 seconds and 30 seconds respectively. The length of the train is-