Mohshin has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?

Read the following graph carefully and answer the related questions-

Total number of students (in thousands) participating in comitative exam in various cities.

What is the ratio of number of students appearing for competitive exam from city C and D together to those appearing from A, D and E together?

Study the given graph and answer the question that follows.

If 60% of the total number of students obtaining 50 marks or more but less than 70 marks are girls and 55 % of the total number of students obtaining 70 marks or more but less than 90 marks are also girls. Then the total number of girls obtaining 50 marks or more but less than 90 marks is:

A man crosses a diagonal of a square in 1.5 minutes with the speed of 4 k/h then the area of the square is -

The probabilities of solving a problem by three students A, B and C are  $$3\over 7$$, $$5\over 9$$ and $$1\over 5$$ respectively. The probability that problem will be solved is:

The average salary, per head, of all the workers of an institution is 60. The average salary of 12 officers is 400; the average salary, per head, of the rest is 56. The total number of workers in the institution is -

The total area of a circle and a square is 5450 cm². The diameter of the circle is 70 cm. What is the difference between the circumference of the circle and the perimeter of the square?

Direction: Study the line graph carefully to answer the following questions.
Line graph shows the production (in thousand units) and percentage of exported mobiles, computers and laptops.

Find the total number Mobiles exported in the year 2011, 2013 and 2015 together?