The  LCM of two numbers is 45 times their HCF. If one of the numbers is 125 and sum of HCF and LCM is 1150. The other numbers is-

If A = 1300 and B = 1450, then B is approximately what percentage more than A?

The angle of elevation of an airplane flying at 1500 altitude from the earth to the airport is 60 degrees, find the horizontal distance of the aircraft from the airport.

Two trains are moving in the same direction at speed of 54 km/h and 92 km/h, their lengths are 400 m and 360 m respectively. What is the time taken (in seconds) by faster train to cross the slower train?

Direction : What should come in place of the question (?) in the following question.

15  34    20   ?   25    43  30

The average speed of a train is 20% less on the return journey than on the onward journey. The train halts for an hour at the destination station before starting on the return journey. If the total time taken for the to and from  journey is 46 hrs, covering a distance of 2000 km, the speed of the train on the return journey is: