Solve it $$ {sin \ θ\over 1+cos\ θ}+{1+cosθ\over sin\ θ}=?$$

X, Y and Z take 18 days to complete a piece of work. If X works alone he finishes the work in 36 days and if Y works alone he finishes it in 60 days. How long will it take Z to complete the work alone?

If cos θ + sin θ =m, sec θ + cosec θ =n, what is m/n?

Directions: The following table represents the percentage marks of four students in six subjects.
Consider the table and answer questions based on it

Who has the highest total marks?

Directions: The following table represents the percentage marks of four students in six subjects.
Consider the table and answer questions based on it

Average marks obtained in Science is higher than that of Maths by

Directions: The following table represents the percentage marks of four students in six subjects.
Consider the table and answer questions based on it

The average marks obtained by the students in Geography and History are

Find the compound interest to the nearest rupee on Rs. 7500 for 2 years 4 months at 12% p.a reckoned annually?

A bank pays half-yearly compound interest at the rate of 5% p.a. . A person deposited Rs 1600 on January 1 and a similar amount on July 1 . Explain how much interest will be paid by the bank at the end of the year.