Simple Interest received by a person in 10 years on a principal. of the Rs. 9500 is 130% of the principal. What is the rate of interest (in %) per annum? 

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.

The sum of squares of three numbers is 532. And the ratio of first to the second as also of the second to the third is 3:2. What is the second number?

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

15  34    20   ?   25    43  30

Nihal walks with 12 km/h after every km, he takes the rest for 12 min after every kilometer. How much time will he take to cover 36 km distance.

One angle of pentagon is 140°. If the remaining angles are in the ratio 1 : 2: 3: 4, the size of the greatest angle is:

The average of 12 number is 42. If a 13th number is added, then the average becomes 44. What is the 13th number?

Two towns A and B are 170 km apart, a train starts at 9 a.m. from A towards B at a speed of 40 km/hr, at 11 a.m. another train starts from B towards A at a speed of 50 km/hr. When will the two trains meet?