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- Question
In a City, 35% of the population is composed of migrants, 20% of whom are from rural areas. Of the local population, 48% is female while this figure for rural and urban migrants is 30% and 40% respectively. If the total population of the city is 728400, what is its female population ?
Options- A. 324138
- B. 349680
- C. 509940
- D. None of these
- Correct Answer
- 324138
- 1. A number is increased by 20% and then decreased by 20%, the final value of the number is ?
Options- A. increase by 2%
- B. decrease by 3%
- C. decrease by 4%
- D. increase by 5% Discuss
- 2. The difference between a number and its two-fifth is 510. What is 10% of that number ?
Options- A. 75
- B. 85
- C. 95
- D. 105 Discuss
- 3. One hour is what percent of a day?
Options- A. 5.6%
- B. 4.16%
- C. 3.35%
- D. 6.7% Discuss
- 4. In a class of 80 students and 5 teachers, each student got sweets that are 15% of the total number of students and each teacher got sweets that are 25% of the total number of students. How many sweets were there?
Options- A. 1060
- B. 960
- C. 1020
- D. 920 Discuss
- 5. The sum of the number of boys and girls in a school is 150. if the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is :
Options- A. 60
- B. 70
- C. 80
- D. 90 Discuss
- 6. A shopkeeper?s earning increases by 25% in first year but decreases by 4% in the next and so on. After 5 years his total earnings would be Rs. 72,000. What is his present earning?
Options- A. Rs. 40,000
- B. Rs. 45,000
- C. Rs. 42,000
- D. Rs. 46,000 Discuss
- 7. When the price of rice decrease by 10%, a girl could buy 1 kg more for Rs. 270. Then, the original price of the rice per kg is
Options- A. Rs. 36
- B. Rs. 30
- C. Rs. 28
- D. Rs. 40 Discuss
- 8. An agent, gets a commission of 2.5% on the sales of cloth. If on a certain day, he gets Rs. 12.50 as commission, the cloth sold through him on that day is worth
Options- A. 300
- B. 500
- C. 700
- D. 900 Discuss
- 9. 45% of 750 - 25% of 480 = ?
Options- A. 337.50
- B. 217.50
- C. 376.21
- D. 120 Discuss
- 10. How many litres of pure acid are there in 8 litres of a 20% solution ?
Options- A. 1.4
- B. 1.5
- C. 1.6
- D. 1.7 Discuss
Percentage problems
Search Results
Correct Answer: decrease by 4%
Explanation:
Here, x = 20 and y = - 20
Therefore, the net % change in value
=
%
=
% or - 4%
Since the sign is negative, there is a decrease in value by 4%.
Correct Answer: 85
Explanation:
Let the number be x. Then, x-(2/5)x = 510
=> 3x/5 =510
=>x =[510 * ( 5/3)] =850
10 % 0f 850 = 85.
Correct Answer: 4.16%
Explanation:
A day has 24 hrs
=> If 24 hrs - 100
Then 1 hr = ?
100/24 = 4.16%
Correct Answer: 1060
Explanation:
Total number of sweets
= 80 x 15 x 80/100 + 5 x 80 x 25/100
= 960 + 100 = 1060
Correct Answer: 60
Explanation:
We have : x + (x% of 150 )= 150
=> x+(x/100)*150] = 150
=>
=> x = (150*2)/5 = 60
Correct Answer: Rs. 40,000
Explanation:
Let his present earnings be Rs. p
ATQ,
(125/100) x (96/100) x (125/100) x (96/100) x (125/100) x p = 72000
p = Rs. 40,000.
Correct Answer: Rs. 30
Explanation:
From the given data,
When the price of rice is decreased by 10%, the value of Rs. 270 would become
270 x 100/90 = 300
Now, the value 270 becomes 300
And given, the girl could buy 1 kg extra for that value
Change in value = 300 - 270 = Rs. 30
Therefore, 1 kg extra rice she can get for Rs. 30
=> The original price of rice = Rs. 30/kg.
As she gets only 9 kgs for Rs. 270 before 10% discount, now after discount she gets 10 kgs instead of 9 kgs for Rs. 270.
Correct Answer: 500
Explanation:
Let the total sale be Rs. x.
Then, 2.5%. of x = 12.50
=> (25/100 * 1/100 * x) = 125/10
=> x = 500.
Correct Answer: 217.50
Explanation:
Given expression = (45 x 750/100) - (25 x 480/100) = (337.50 - 120) = 217.50
Correct Answer: 1.6
Explanation:
Quantity of pure acid = 20% of 8 litres = ((20/100)*8) litres = 1.6 litres.
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