Quantitative Aptitude - Arithmetic Ability Questions

If R = 97 and S = 155.2, then S is how much percentage more than R?

If 7A = 5B = 2C; find A : B : C.

The original price of a TV set is Rs. 6,000. If the price is discounted by 20% and then raised by 10% for service contract, the price charged by the shopkeeper is

If Sec θ = 25/24 , then what is the value of Sin θ?

Reflection of the point (2,-4) in the origin is

A man travels some distance at a speed of 12 km/hr and returns at a speed of 9 km/hr. If the total time taken by him is 2 hrs 20 min, the distance is

A can do 1/3rd of a job in 3 days and B can do half of the job in 9 days. If they work on it together, then in how many days can they finish half of the job?

The mean of marks secured by 65 students in division A of class X is 54, 30 students of division B is 50 and that of 55 students of division C is 48. Find the mean of marks of the students of three divisions of Class X.