Introduction to Percentage

Q.

For a situation of no profit no loss, which of the following is correct?

1. $CP>SP$
2. $SP>CP$
3. $CP=SP$
4. None of these

Q. Express 41$\frac{2}{3}$% as a fraction. (Select all that apply)

1. 
2. 
3. 
4. 

Q. 80 is what percent of 200?

1. 150%
2. 100%
3. 60%
4. 50%

Q.

100 is what percent of 200?

1. 100%
2. 60%
3. 50%
4. 150%

Q. What is the difference between ratio and proportion?

Q. The percentage increase in the perimeter of a rectangle, if each of its sides is increased by $20\%$.

1. 
2. 
3. 
4. 

Q.

Convert the following fractions into percentages:

$\frac{5}{6}$

Q.

In expressing a length of 81.472 km as nearly as possible with the three significant digits, find the percentage error?

1. 3.4

2. 0.034

3. 0.0034

4. 0.34

Q. Neelam’s annual income is Rs. 288000. Her annual savings amount to Rs. 36000. The ratio of her savings to her expenditure is​

1. 1 : 8
2. 1 : 7
3. 1 : 6
4. 1 : 5

Q.

If the cost of a book worth ₹50 is increased by ₹25, then the percentage increase in its price is _____ .

1. $25\%$

2. $20\%$

3. $50\%$

4. $10\%$

Q.

An almirah is sold at ₹ 5225 after allowing a discount of 5%. Find its marked price.

1. ₹ 5000

2. ₹ 5500

3. ₹ 6000

4. ₹ 4500

Q.

A book was purchased at Rs. 600 and sold at Rs.650. What is the profit?

1. Rs. 50
2. 600
3. 60
4. 650

Q. An alloy of copper and zinc contains $45\%$ copper and the rest is zinc. Find the weight of zinc in $20kg$ of the alloy.

Q.

Aju scored 70 in 1st test and 85 in 2nd test of Mathematics out of 100. What is percentage increase in marks scored by him?
[3 MARKS]

Q.

Express the following ratio as percentage:

$1:1$

Q.

The table below shows the number of children with different heights.
$\begin{array}{ccccc}Height& 110cm& 120cm& 130cm& 140cm\\ Noofchildren& \text{22}& \text{25}& \text{21}& \text{32}\end{array}$

What is the percentage of students whose height is more than 125 cm?

1. 53%

2. 50%

3. 70%

4. 60%

Q.

What percentage of 50 litres is 75 litres?

1. 200%

2. 150%

3. 133.33%

4. 50%

Q.

There are 30 fruits in a bag out of which 12 are oranges, 8 are bananas and 10 are apples.The percentage of apples in the bag is :

1. 30%

2. 35%

3. 37.5%

4. 33.33%

Q.

Express $\frac{13}{100}$ as percent.

Q.

Find the value of:

$4\%of12.5$

Q.

A mixture of sugar and salt contains 30% sugar. Find the weight of salt in 20kgs of the mixture.

1. 7 kgs

2. 14 kgs

3. 12 kgs

4. 6 kgs

Q. What is the ratio of the first odd prime number to the first even composite number?

Q. Raghu buys a chair for ₹3000. He wants to sell it at a profit of ₹500 after making a discount of ₹300. What is the marked price of the chair?
\(~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[3]\)

Q.

Find the value of the following.

$40\%of540litre$

Q. Priya was preparing a cake. She mixed 3 cups of flour, 2 cups butter and 1 cup sugar. The percentage of flour used in the cake is ____.

1. 55.75%
2. 50%
3. 60%
4. 62.5%

Q.

Express the following ratio as percentage:

$2:3$

Q.

Convert the following fractions into percentages:

$\frac{5}{8}$

Q.

Priya was preparing a cake. She mixed 3 cups of flour, 2 cups butter, and 1 cup sugar. The percentage of flour in the cake is ___.

1. 42%

2. 80%

3. 35%

4. 50%

Q. Out of 18 eggs in a tray, 9 are rotten. What percentage of the eggs are good?

1. 40%
2. 50%
3. 60%
4. 70%

Q. In an election, a candidate secured 47% of votes polled and lost the election by 12, 366 votes. Find the total votes polled and the votes secured by winning candidate.

1. 2, 06, 133 and 1, 09, 266
2. 2, 16, 100 and 1, 19, 233
3. 2, 06, 100 and 1, 09, 233
4. 2, 06, 233 and 1, 09, 200