A and B together can complete a work in 20 days. A is 20 percent more efficient than B, B alone can complete the same work in how many days?

$$\left(4{2\over3} + {5{1\over 6}}\right)× {45 \%} \ of \ 240=?$$

In the given question, two equations numbered l and II are given. Solve both the equations and mark the appropriate answer.

I. x² - 5x + 6 = 0

II. 2y² - 32y + 126 = 0

If a + b – c = 0 then the value of 2b²c² + 2c²a² + 2a²b² –a⁴ – b⁴ – c⁴

By selling an article at 3/4th of the marked price, there is a gain of 25%. The ratio of the marked price and the cost price is-

Directions: The table given here shows the production of five types of cars by a company in the year 1989 to 1994. Study the table and answer questions.

The percent increased in total production of all types of cars in1992 to that in 1991 was :

Directions : Study the following frequency polygon and answer the questions. Given a line graph showing the number of students passed in Higher Secondary Examination in a school over the years 2008 to 2013.

The average of passed students in the years 2008, 2009, 2012 approximately is 

The average monthly salary of all the employees in an industry is Rs. 12,000. The average salary of male employees is Rs. 15,000 and that of female employees is Rs. 8,000. What is the ratio of male employees to female employees?