What is the total compound interest on Rs.45000 for 3 years when the sum is divided into a ratio of 4 : 5 and rate of interest on a small sum is 10% and 20% on the large sum? (Compounded annually)

If one of the equal angles of an isosceles triangle is 65°, then the angle at the vertex is

Direction: The following table shows the number of students of 7 colleges A, B, C, D, E, F, G participating in extra-curricular activities :

The ratio of total number of students in activity II and I is ?

Rinky borrowed a certain sum of money from Kajal under the following repayment scheme based on simple interest. 8% p.a. for the initial 2 years, 9.5% p.a. for the next 4 years, 11% p.a. for the next 2 years, 12% p.a. after the first 8 years. Find the amount which a sum of Rs. 9000 taken for 12 years becomes at the end of 12 years?

A batsman scored 87 runs in the 21st match in his career. His average of runs per match increased by 2. What was his average before the 21st match?

A boat covers a certain distance against the stream in 9 hours 36 min and it covers the same distance along the stream in 6 hours. What is the ratio of the speed of the boat in still water to that of the stream?

$$ {x^{8}+4\over{x^{4}+2x^{2}+2}}$$ is equal to

When x = 1, then value of |2x – 1| + |x – 3| will be -