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Question 1:

A trader fixes the selling price of his things by increasing the selling price by 10% and allows a 10% discount on the same selling price. What is the profit or loss percentage of his sale accordingly?

Question 2:

The initial ratio of sugar and flour in a food item was $17: 28$. Elizabeth added so much flour to this $27 \mathrm{~kg}$ food that the ratio of sugar and flour becomes $2: 5$. How much flour did Elizabeth add later?

Question 3:

$3^{2^{x}}=81^{2^{3 x}}$, then $x$ is equal to

Question 4:

For which value of x, the mode of the following data will be 36?

36,27,23,27,36,24 ,x,27,36,25,25

Question 5:

How many kilograms of pure salt must be added to $60 \mathrm{~kg}$ of $5 \%$ solution of salt and water to increase it to a $20 \%$ solution?

Question 6:

The capacity of a cubical tank is 50,000 litres of water. Find the breadth of the tank, if its length and depth are 2.5m and 10m respectively.

Question 7:

The length, breadth and height of a room are $5 \mathrm{~m}, 4 \mathrm{~m}$ and $3 \mathrm{~m}$ respectively. Find the cost(in rupees) of white-washing the walls of the room and the ceiling at the rate of Rs $7.50$ per $\mathrm{m}^{2}$.

Question 8:

Find the altitude of the smallest sides are $6 \mathrm{~cm}, 8 \mathrm{~cm}$ and $10 \mathrm{~cm}$.

Question 9:

Which of the following number are more than $5 \frac{6}{7}$ but less than $6 \frac{2}{3}$.

Question 10:

Find the area of triangle (in cm2) whose sides are 5cm,7cm and 10cm.