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- Question
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
- Correct Answer
- 3:4
ExplanationAgain
and mn =60x
so,
=> m= 20 and n= 15
Hence,
- 1. 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
- 2. 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
- 3. 3 : 12 :: 5 : ?
Options- A. 17
- B. 30
- C. 26
- D. 32 Discuss
- 4. 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
- 5. 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
- 6. 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
- 7. 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
- 8. If the ratio of the ages of two friends A and B is in the ratio 3 : 5 and that of B and C is 3 : 5 and the sum of their ages is 147, then how old is B?
Options- A. 27 Years
- B. 75 Years
- C. 45 Years
- D. 49 Years Discuss
- 9. The ratio of the incomes of Pavan and Amar is 4 : 3 and the ratio of their expenditures are 3:2. If each person saves Rs. 1889, then find the income of Pavan?
Options- A. 6548
- B. 5667
- C. 7556
- D. 8457 Discuss
- 10. Three cats are roaming in a zoo n such a way that when cat A takes 5 steps, B takes 6 steps and C takes 7 steps.But the 6 steps of A are equal to the 7 steps of B and 8 steps of C. what is the ratio of their speeds?
Options- A. 140:144:147
- B. 40:44:47
- C. 15:21:28
- D. 252:245:240 Discuss
Ratio and Proportion problems
Search Results
Correct Answer: 30
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
Explanation:
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: 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
Correct Answer: 45 Years
Explanation:
The ratio of the ages of A and B is 3 : 5.
The ratio of the ages of B and C is 3 : 5.
B's age is the common link to both these ratio. Therefore, if we make the numerical value of the ratio of B's age in both the ratios same, then we can compare the ages of all 3 in a single ratio.
The can be done by getting the value of B in both ratios to be the LCM of 3 and 5 i.e., 15.
The first ratio between A and B will therefore be 9 : 15 and
the second ratio between B and C will be 15 : 25.
Now combining the two ratios, we get A : B : C = 9 : 15 : 25.
Let their ages be 9x, 15x and 25x.
Then, the sum of their ages will be 9x + 15x + 25x = 49x
The question states that the sum of their ages is 147.
i.e., 49x = 147 or x = 3.
Therefore, B's age = 15x = 15*3 = 45
Correct Answer: 7556
Explanation:
Let ratio of the incomes of Pavan and Amar be 4x and 3x
and Ratio of their expenditures be 3y and 2y
4x - 3y = 1889 ......... I
and
3x - 2y = 1889 ...........II
I and II
y = 1889
and x = 1889
Pavan's income = 7556
Correct Answer: 140:144:147
Explanation:
Frequency of step of A:B:C = 5 : 6 : 7
But in terms of size of step, 6A = 7B = 8C
Therefore, Ratio of speeds of A, B and C = 5/6 : 6/7 : 7/8 = 140 : 144 : 147
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