Percentage of a Number

Q.

Question 101

The strength of a school is 2000. If 40 % of the students are girls, then how many boys are there in the school?

Q. What is the percentage of the number of prime numbers in the first 20 natural numbers?

1. $30\%$
2. $40\%$
3. $50\%$
4. $60\%$

Q.

Question 18

If 90 % of x is 315 km, then the value of x is
(a) 325 km
(b) 350 km
(c) 405 km
(d) 340 km

Q.

A man travelled $60$ km by car and $240$ km by train. Find what percent of the total journey did he travel by car and what percent by train?

Q.

Chalk contains $10\%$ calcium, $3\%$ carbon and $12\%$ oxygen, Find the amount of carbon and calcium (in grams) in $2\frac{1}{2}$ kg of chalk.

Q.

Shubendhu buys an old scooter for Rs. 4700 and spends Rs. 800 on its repairs. If he sells the scooter for Rs. 5800, his gain (in percentage) is:

1. 65/12

2. 60/11

3. 71/11

4. 77/12

Q.

Question 103

800 kg of mortar consists of 55 % sand, 33 % cement and rest lime.
What is the mass of lime in mortar ?

Q.

If the cost price of 25 books is equal to the selling price of 20 books, then find the gain/loss percentage?

1. 50%
2. 15%
3. 20%
4. 25%

Q.

Raju earns $\text{Rs.}34000$ per month. He spends $\frac{1}{4}th$ of his income on food, $\frac{3}{10}th$ of the remainder on house rent and $\frac{5}{21}th$ of the remainder on education of children. How much money is still left with him?

1. 13300

2. 13100

3. 13600

4. 13200

Q.

Question 96

What percent of 1 day is 1 min?

Q.

Question 97

What percent of 1 km is 1000 m?

Q.

Question 105

Medha deposited 20 % of her money in a bank. After spending 20 % of the remainder, she has ₹ 4800 left with her. How much did she originally have?

Q.

Question 20

$\frac{25\%of50\%of100\%}{25\times 50}$ is equal to
(a) 1.1 %
(b) 0.1 %
(c) 0.01 %
(d) 1 %

Q.

Question 99

What percent of ₹ 80 is₹ 100?

Q.

Question 114

Bhavya earns ₹ 50000 per month and spends 80% of it. Due to pay revision, her monthly income increases by 20% but due to price rise, she has to spend 20% more. Find her new savings.

Q.

Given, $n$ students in the class like football, what may $2n$ show? What may $\frac{n}{2}$ show?

Q.

Adith spends 0.75 of hours salary every month . If he earns rs 12000 every month. How many months will he save rs 39000

Q.

Question 1

20 % of 700 m is
(a) 560 m
(b) 70 m
(c) 210 m
(d) 140 m

Q.

What will be the sign of quotient , if we divide (-729) by 9?

Q.

Question 80 (i)

Find the value of x, if
8 % of x is ₹ 100.

Q.

What is$50\%$ of $120$?

Q.

Question 126

Ambika got 99% marks in Mathematics, 76% marks in Hindi, 61% in English, 84% in Science and 95% in Social Science. If each subject carries 100 marks, then find the percentage of marks obtained by Ambika in the aggregate of all the subjects.

Q.

Question 80 (iii)

Find the value of x, if
35 % of ₹ x is ₹ 280.

Q.

Question 128

Harish bought a gas-chullah for ₹ 900 and later sold it to Archana at a profit of 5 % . Archana used it for a period of two years and later sold it to Babita at a loss of 20 %. For how much did Babita get it?

Q.

What percent is:

$25paise$ of $4rupees$

Q.

After spending $69\%$ of his monthly earnings a man saves Rs $2108$. Find his monthly income.

Q.

Dylan drew 1 heart, 1 star, and 26 circles. What is the ratio of circles to hearts? [2 MARKS]

Q.

Question 137

150 students are studying English, Maths or both. 62% of students study English and 68% are studying Maths. How many students studying both?

Q.

Anu scored $384$ marks out of $450$. What percent marks did she get ?

Q.

A rock climber climbs a hill of height 200m at the rate of 3 m/s. If he starts climbing from 20m above the ground, then find the following :
(i) What is the total distance he needs to trek to climb to the top of the hill?
(ii) What is the time taken by him to reach the hilltop?
(iii) If he covered half of the distance at 3 m/s and remaining distance at 2 m/s, find the total time taken by him to climb the hill. [3 MARKS]