A train passes a 100 meters long platform in 28 seconds and a man standing on the platform in 20 seconds. The speed of the train is:

What is the value of a when $$ {x^{2(3a+1)}}={x^{3}}$$ ?

Study the given graph carefully to answer the questions that follow:

If carpenter X and carpenter Y were to make a chair together how many days would they take?

Directions: Study the following data and answer the questions. 

The score of students of a class are given as follows :

The number of students whose IQ score is 100 and more is 

In a regular polygon, the exterior and interior angles are in the ratio 1 : 4. The number of sides of the polygon is 

Rahul plans to buy a scooter for his sister for which he saves Rs. 15625 at the start of every year for 3 year. If the rate of CI is 4% pa. then amount at which he plans to buy the scooter is (in Rs.)

The average of the three numbers is 60. The first number is one-fourth of the sum of the remaining two numbers, the first number is-

A certain sum of Rs.4200 becomes Rs5523 at 11% p.a simple interest in a certain time. What is the simple interest on the sum of Rs. 4800 at the same rate and in same time period?