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- Question
3 : 12 :: 5 : ?
Options- A. 17
- B. 30
- C. 26
- D. 32
- Correct Answer
- 30
Explanation - 1. The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs. 5000 ?
Options- A. Rs. 5500
- B. Rs. 6000
- C. Rs. 6200
- D. Rs. 6350 Discuss
- 2. If 76 is divided into four parts proportional to 7, 5, 3, 4, then the smallest part is:
Options- A. 12
- B. 15
- C. 16
- D. 19 Discuss
- 3. The third proportional to x2-y2 and x-y is :
Options- A. (x + y )
- B. (x - y)
- C. (x + y) / ( x - y)
- D. (x -y) / ( x + y) Discuss
- 4. The ratio of male and female in a city is 7 : 8 respectively and percentage of children among male and female is 25 and 20 respectively. If number of adult females is 156800, what is the total population of the city?
Options- A. 4,12,480
- B. 3,67,500
- C. 5,44,700
- D. 2,98,948 Discuss
- 5. Divide Rs.6500 among A, B and C so that after spending 90%, 75% and 60% of their respective saving was in the ratio of 3: 5: 6
Options- A. A=1000, B=2000, C=1500
- B. A=3000, B=1000, C=1500
- C. A=3000, B=2000, C=1500
- D. A=3000, B=2000, C=1000 Discuss
- 6. One year ago the ratio between Maneela?s and Shanthi?s salary was 3 : 4. The ratios of their individual salaries between last year?s and this year?s salaries are 4 : 5 and 2 : 3 respectively. At present the total of their salary is Rs. 4160. The salary of Maneela, now is?
Options- A. Rs. 1600
- B. Rs. 1700
- C. Rs. 1800
- D. Rs. 1900 Discuss
- 7. The sum of three numbers is 98. If the ratio of the first to second is 2 : 3 and that of the second to the third is 5 : 8, then the second number is:
Options- A. 10
- B. 20
- C. 30
- D. 40 Discuss
- 8. For any two numbers m , n ; (m+n) : (m-n) : mn = 7: 1: 60 . Find the value of 1/m : 1/n
Options- A. 4:3
- B. 8:7
- C. 3:4
- D. 7:8 Discuss
- 9. A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?
Options- A. 48
- B. 12
- C. 36
- D. 60 Discuss
- 10. Rice worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio 1 : 1 : 2. If the mixture is worth Rs. 153 per kg, then the price of third variety of rice per kg?
Options- A. Rs. 571.25
- B. Rs. 175.5
- C. Rs. 751.75
- D. Rs. 850 Discuss
Ratio and Proportion problems
Search Results
Correct Answer: Rs. 6000
Explanation:
The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs 5000 ?
Ratio of increase of wages = 22:25
Ratio of decrease of labourers = 15:11
Compound ratio of wages of labourers = 22 x 15 : 25 x 11 = 330:275
Final bill = Rs. 5000
For 275 ratio wages = Rs. 5000
For 1 ratio wages = 5000/275
For 330 ratio wages = 5000/275 x 330 = Rs. 6000
Correct Answer: 12
Explanation:
Given ratio = 7 : 5 : 3 : 4, Sum of ratio terms = 19.
Smallest part = (76*3/19) = 12
Correct Answer: (x -y) / ( x + y)
Explanation:
Let the third proportional to and be z. Then,
=> z=
Correct Answer: 3,67,500
Explanation:
Let the total population be 'p'
Given ratio of male and female in a city is 7 : 8
In that percentage of children among male and female is 25% and 20%
=> Adults male and female % = 75% & 80%
But given adult females is = 156800
=> 80%(8p/15) = 156800
=> 80 x 8p/15 x 100 = 156800
=> p = 156800 x 15 x 100/80 x 8
=> p = 367500
Therefore, the total population of the city = p = 367500
Correct Answer: A=3000, B=2000, C=1500
Explanation:
A's spending 90% therefore saving = 10% B's spending 75% therefore saving = 25% C's spending 60% therefore saving = 40% Let us suppose A, B and C saves Rs. 3, 5 and 6 respectively. 10% of A's saving = Rs. 3 100% of A's saving = (3/10)*100 = Rs. 30 25% of B's saving = Rs. 5 100% of B's saving = (5/25)*100 = Rs. 20 40% of C's saving = Rs.6 100% of C's saving = (6/40)*100 = Rs. 15 Divide Rs. 6500 in the ratio of 30 : 20 : 15 A's Share = (30/65)*6500 = Rs. 3000 B's Share = (20/65)*6500 = Rs. 2000 C's Share = (15/65)*6500 = Rs. 1500
Correct Answer: Rs. 1600
Explanation:
Let the salaries of Maneela and Shanthi one year before be M1, S1 & now be M2, S2 respectively.
Then, from the given data,
M1/S1 = 3/4 .....(1)
M1/M2 = 4/5 .....(2)
S1/S2 = 2/3 .....(3)
and M2 + S2 = 4160 .....(4)
Solving all these eqtns, we get M2 = Rs. 1600.
Correct Answer: 30
Correct Answer: 3:4
Explanation:
Again
and mn =60x
so,
=> m= 20 and n= 15
Hence,
Correct Answer: 48
Explanation:
If you double the sides of a cube, the ratio of the surface areas of the old and new cubes will be 1: 4. The ratio of the volumes of the old and new cubes will be 1: 8.
Weight is proportional to volume. So, If the first weighs 6 pounds, the second weighs 6x8 pounds =48.
Correct Answer: Rs. 175.5
Explanation:
Let the price of required variety = Rs. P/kg
Then, respective amounts were m kg, m kg and 2m kg
= 126m + 135m + 2pm = 153 x 4m
=> 2p = 351
p = 175.5 / kg
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