Point P is the midpoint of segment AB. Co-ordinates of P are (5, -1) and A are (2, -4). What are the co-ordinates of point B?

What is the reflection of the point (3,-5) in the origin?

If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?

The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?

If a + b = 1 and ab = -6, then what is the value of a3+ b3?

If 5x + 6(3-2x) = 4, then what is the value of x?

If in 3 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs. 25,000 in 3 years at the same rate?

To cover a distance of 90 km in 2.5 hours what should be the average speed of the car in meters/second?