Discussion
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- Question
Total number of students in 3 classes of a school is 333 . The number of students in class 1 and 2 are in 3:5 ratio and 2 and 3 class are 7:11 ratio . What is the strength of class that has highest number of students ?
Options- A. 125
- B. 155
- C. 135
- D. 165
- Correct Answer
- 165
ExplanationRatio C1:C2 = 3:5 and C2:C3 = 7:11
So C1:C2:C3 = 21 : 35 : 55
Let the strength of three classes are 21x, 35x and 55x respectively, then
Given that 21x + 35x + 55x = 333
=> 111x = 333 or x=3
So strength of the class with highest number of students =55x = 55x3 = 165. - 1. Pooja, Shipra and Mounika are three sisters .Pooja and Shipra are twins. The ratio of sum of the ages of Pooja and Shipra is same as that of Mounika alone. Three years earlier the ratio of age of Pooja and Mounika was 2:7 . what will be the age of Shipra 3 years hence?
Options- A. 21 years
- B. 16 years
- C. 8 years
- D. 12 years Discuss
- 2. A sum is divided among K, L and M in such a way that for each rupee K gets, L gets 45 paisa and M gets 30 paisa. If the share of L is Rs. 27, what is the total amount ?
Options- A. Rs. 159
- B. Rs. 96
- C. Rs. 147
- D. Rs. 105 Discuss
- 3. If Rs. 782 be divided into three parts, proportional to 1/2:2/3:3/4, then the first part is:
Options- A. Rs. 408
- B. Rs. 204
- C. Rs. 412
- D. Rs. 220 Discuss
- 4. A company requires 12,100 strength. Present employees are 400 ladies and 6400 gents. To reach the target how many ladies required to maintain the same ratio ?
Options- A. 400
- B. 600
- C. 900
- D. 700 Discuss
- 5. If k : l = 4 : 3 and l : m = 5 : 3, then find k : l : m ?
Options- A. 18 : 24 : 11
- B. 9 : 15 : 1
- C. 20 : 15 : 9
- D. 21 : 7 : 3 Discuss
- 6. At a game of billiards, A can give B 20 points in 60 and A can give C 15 points in 60. How many points can C give B in a game of 90 ?
Options- A. 9 points
- B. 10 points
- C. 11 points
- D. 8 points Discuss
- 7. The ratio between the number of sheep and the number of horses at the Stewar farm is 4 to 15. If each of horse is fed 110 ounces of horse food per day and the farm needs a total 13200 ounces of horse food per day. what is number sheep in the form ?
Options- A. 32
- B. 36
- C. 44
- D. 52 Discuss
- 8. What will be the average of the first 5 positive even numbers divisible by 9?
Options- A. 50
- B. 54
- C. 48
- D. 62 Discuss
- 9. On her deathbed, a grand mother called upon his three grand sons and told them to distribute all her assets worth Rs. 52,500 in the ratio of 1/35 : 1/21 : 1/15 amongst themselves. Find the smallest share amongst the three portions ?
Options- A. Rs. 5422
- B. Rs. 10,500
- C. Rs. 12,800
- D. Rs. 15,000 Discuss
- 10. A Product is supported each week by the same three Product supporters. Last month the first supporter took 440 calls, the second took 360 calls, and the third took 300 calls. This month the job will consists of 1500 calls. If the three supporters each increase their work proportionately, how many more calls will the second supporter take this month than last month ?
Options- A. 131 calls
- B. 160 calls
- C. 491 calls
- D. 600 calls Discuss
Ratio and Proportion problems
Search Results
Correct Answer: 8 years
Explanation:
Since Pooja and Shipra are twins so their ages be same. Let their ages be x and age of Mounika be y , then
x+x = y -------(1)
and
Now, from equation (1),
7x - 4x = 15 => x = 5
So the age of Shipra 3 years hence will be 5+3 = 8 years
Correct Answer: Rs. 105
Explanation:
K : L : M = 100 : 45 : 30
= 20 : 9 : 6
Given L share is 27
=> 9 ------ 27
35 ------ ?
=> 105
Correct Answer: Rs. 204
Explanation:
Given ratio = 1/2:2/3:3/4 = 6:8:9
1st part = 782 x 6/23 = Rs. 204.
Correct Answer: 900
Explanation:
6,400 gents, 2400 ladies in that company.
So total 8,800employees.
for 8,800 employees, we want 2400 ladies.
for 12,100employees we want how many ladies ?
=> (12,100/8,800) x 2400 = 3300.
So we want 3300 - 2400 = 900 more ladies.
Correct Answer: 20 : 15 : 9
Explanation:
Given k : l = 4 : 3
l : m = 5 : 3
Then k : l : m = 20 : 15 : 9
Correct Answer: 10 points
Explanation:
a:b = 60:40
a:c = 60:45
c/a x a/b = 45/60 x 60/40 = 45/40 = 90/80
So C gives B => 10 points.
Correct Answer: 32
Explanation:
Given ratio of number of sheep and horses = 4 : 15
Let number of sheep and horses are 4k and 15k
Number of horses = 13200/110 = 120
Now 15K = 120 and k = 8
Number of sheep = 4k = (4 x 8) = 32
Correct Answer: 54
Correct Answer: Rs. 10,500
Explanation:
The ratio of distribution should be:
21 x 15 : 15 x 35 : 35 x 21
= 315 : 525 : 735
= 3 : 5 : 7
The smallest share will be of worth:
3/15 x 52,500 = Rs. 10,500
Correct Answer: 131 calls
Explanation:
1st supporter recieve 440 calls
2nd supporter recieve 360 calls
3rd supporter recieve 300 calls
So total calls = 1100 calls ;
Calls this month= 1500
So remaining calls to be distributed is 400
So Now Ratio 1st:2nd:3rd ==> 440:360:300
=> 22:18:15
Now No. of More Calls 2nd supporter will get => [18/(22+18+15)] x 400
=> (18/55) x 400
=> 131 Calls
So 131 more Calls than last month.
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