Instructions

For the following questions answer them individually

Question 11

Expenditures of a Company (in Lakh Rupees) per Annum Over the given Years was as under.

What is the average salary expenditure(in Lakh Rupees) per Annum during this period?

Question 12

Number of different categories of goods sold in the city over the years (in thousands) is as given under:

In which of the following years was the number of refrigerators sold approximately 25% of the number of cell phones sold?

Question 13

In the figure, PQ is a diameter of the circle. Angle PQS = $$35^\circ$$. Find angle QRS.

Question 15

If a and b are positive real numbers and $$a * b$$ denotes $$\sqrt{a \times b}$$, what is the value of 8 * (4 * 16)?

Question 16

The average age of three men is 50 years and their ages are in the proportion 3:5:7. The age of the youngest man is:

Question 17

By selling mangoes at the rate of 64 for Rs. 2,000, the vendor loses 40%. How many should he sell for Rs.1000 so as to gain 20%?

Question 18

The area of a triangle metal plate with base 88 cm and altitude 64 cm is to be reduced to one-fourth of its original area by making a hole of circular shape at the center. The radius of this hole will be:-

Question 19

Find the value of $$\sqrt{\frac{2 + \sqrt3}{2 - \sqrt3}}$$

Correct to three places of decimal.

Question 20

A mixture of petrol and kerosene weighing 5 kg contains 5% kerosene. How much more kerosene (approx.) must be added into it to make it 10%?