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- Question
- The present ages of two persons are 36 and 50 yr, respectively. If after n yr the ratio of their ages will be 3 : 4, then the value of n is?
Options- A. 3
- B. 4
- C. 7
- D. 6
- Correct Answer
- 6
ExplanationAccording to the question,
(36 + n) / (50 + n) = 3/4
? 144 + 4n = 150 + 3n
? n = 6 - 1. At present, Kavita is twice Sarita's age. 8 yr hence, the respective ratio between Kavita's and Sarita's ages will be 22 : 13. What is Kavita 's present age?
Options- A. 26 yr
- B. 18 yr
- C. 42 yr
- D. 36 yr Discuss
- 2. 7 yr ago, the ages of A and B were in the ratio 4 : 5 and 7 yr hence, they will be in the ratio 5 : 6. The present age of B is?
Options- A. 56 yr
- B. 63 yr
- C. 70 yr
- D. 77 yr Discuss
- 3. The ratio between the present ages of Indira and Lizzy is 3 : 8, respectively. After 8 yr, Indira's age will be 20 yr. What was Lizzy's age 5 yr ago
Options- A. 37 yr
- B. 27 yr
- C. 28 yr
- D. 38 yr Discuss
- 4. The ratio between the present ages of A and B is 4 : 5. If the ratio between their ages 4 yr hence become 14 : 17, Then what is B's age at present?
Options- A. 30 yr
- B. 28 yr
- C. 34 yr
- D. Data inadequate Discuss
- 5. The average age of 8 children of a family is 12 yr. If the age of 7 children are 12, 8, 14, 11, 9, 13 and 15 yr. then the age of 8th child will be?
Options- A. 12 yr
- B. 14 yr
- C. 13 yr
- D. 15 yr Discuss
- 6. The difference between the ages of Meena and Seema is 3 yr and the ratio between their ages is 7 : 8. What is the sum of their ages?
Options- A. 43 yr
- B. 41 yr
- C. 45 yr
- D. 48 yr Discuss
- 7. The age of a man after 15 yr is 4 times the age of that man 15 yr before. His present age is?
Options- A. 10 yr
- B. 15 yr
- C. 20 yr
- D. 25 yr Discuss
- 8. 10 yr before, the ratio of ages of A and B was 13 : 17. After 17 yr from now, the ratio of their ages will be 10 : 11. The present age of B is
Options- A. 23 yr
- B. 40 yr
- C. 27 yr
- D. 44 yr Discuss
- 9. The present ages of Sunil and Anil are 40 and 60 years respectively. How many years ago was the ratio of their ages 3: 5?
Options- A. 5 years
- B. 10 years
- C. 12 years
- D. 15 years Discuss
- 10. A mother is 25 years older than her daughter. Five years ago, the age of the mother was 6 time the age of the daughter. What is the present age of mother?
Options- A. 25 years
- B. 29 years
- C. 32 years
- D. 35 years Discuss
Problems on Ages
Search Results
Correct Answer: 36 yr
Explanation:
Let Sarita;s present age = k yr
Then, Kavita's present age = 2k yr
According to the question,
(2k + 8) / (k + 8) = 22/13
? 26k + 104 = 22k + 176
? 4k = 72
? k = 18
Hence, Kavita's age = 2 x 18 = 36 yr
Correct Answer: 77 yr
Explanation:
Let 7 yr ago, ages of A and B 4k yr and 5k yr, respectively.
Then, present age of A = 4k + 7
and present age of B = 5k + 7
Now, according to the question,
? (4k + 7 + 7) / (5k + 7 + 7) = 5/6
? 24k + 84 = 25k + 70
? k = 14
Hence, B's present age = 5 x 14 + 7 = 77 yr
Correct Answer: 27 yr
Explanation:
Let present ages of indira and Lizzy are 3k yr and 8k yr, respectively.
? 3k + 8 = 20 ? 3k = 12
? k = 4
Hence, Lizzy's required age = 8k - 5
= 32 - 5
= 27 yr
Correct Answer: 30 yr
Explanation:
Let the ages of A and B are 4N and 5N yr. respectively.
According to the question,
? (4N + 4)/(5N + 4) = 14/17
? 68N + 68 = 70N + 56
? 2N = 12
? N = 6
Hence present age of B = 5 x 6 = 30 yr
Correct Answer: 14 yr
Explanation:
? Total age of 8 children = 8 x 12 = 96 yr
And total age of 7 children = 12 + 8 + 14 + 11 + 9 + 13 + 15 = 82
? The age of 8th child = 96 - 82 = 14 yr
Correct Answer: 45 yr
Explanation:
Let the present of Meena and Seema are 7k yr and 8k yr, respectively.
? 8k - 7k = 3
? k = 3
Hence, required sum = 8k + 7k
= 15 x 3 = 45 yr
Correct Answer: 25 yr
Explanation:
Let present age of man be k yr.
According to the question,
k + 15 = 4(k - 15)
? k - 15 = 4k - 60
? 3k = 75
? k = 25
Hence, the present age of man is 25 yr.
Correct Answer: 27 yr
Explanation:
Let the ages of A and B 10 yr before were 13k yr and 17k yr, respectively.
Then, present age of A = 13k + 10
and present age of B = 17k + 10
According to the question,
? (13k + 10 + 17) / (17k + 10 + 17) = 10/11
? (13k + 27) / (17k + 27) = 10/11
? 143k + 297 = 170k + 270
? 27k = 27
? k = 1
Hence, present age of B = 17 x 1 + 10 = 27 yr
Correct Answer: 10 years
Explanation:
Let us assume x years ago, the ratio of their ages was 3 : 5, then
According to question,
(40 - x)/(60 - x) = 3/5
? (40 - x) 5 = 3 (60 - x)
? 200 - 5x = 180 - 3x
? 2x = 20
? x = 10 years
Correct Answer: 35 years
Explanation:
Let the present ages of mother and her daughter are ( x + 25 ) and x years respectively ; then 6( x - 5 ) = x + 25 - 5 ? 6x - 30 = x + 20 ? 5x = 50 ? x = 10
Hence, the age of the mother = 10 + 25 = 35 years
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