Bissoy.com
Doctors Medicines MCQs Q&A

Radha has three daughters Rishka, Mishka and Gracia. Rishka and Mishka are twins. Sum of the ages of twins is equal to the age of Gracia. Three years before, the ratio of age of Mishka to that of Gracia was 2 ∶ 7. What will be the age of Rishka three years hence?

Radha has three daughters Rishka, Mishka and Gracia. Rishka and Mishka are twins. Sum of the ages of twins is equal to the age of Gracia. Three years before, the ratio of age of Mishka to that of Gracia was 2 ∶ 7. What will be the age of Rishka three years hence? Correct Answer 8 years

Let the ages of Rishka, Mishka and Gracia be a years, a years and b years respectively.

At present, 2a = b        ---- (1)

Three years before, (a - 3)/(b - 3) = 2/7

⇒ 7a – 21 = 2b - 6

⇒7a - 2b = 15       ---- (2)

From equations (1) and (2):

⇒ 7a - 4a = 15

∴ a = 5.

∴ Age of Rishka after 3 years = 5 + 3 = 8 years

Related Questions

Consider the following statements about Twins:   A) Monozygotic twins are formed in the same zygote while Dizygotic twins are formed in a different zygote. B) Monozygotic twins are non-identical twins while Dizygotic twins are identical twins. Choose correct statement/s?
Sum of ages of Ajay, Bharti and Dhruv is 10 years more than the sum of ages of Bharti, Dhruv and Tara. Chaten is 6 year older then Bharti and 2 years younger than Dhruv. What is the ratio of present age of Ajay and Chaten? Which of the following option is sufficient alone to find the answer? A) Age of Chaten after 13 years will be 35 years. B) Sum of present age of Bharti, Chaten and Dhruv is 47 years. C) Sum of present age of Ajay, Tara and Chaten is 48 years. D) Sum of present age of Bharti and Dhruv is 24 years and Ajay and Chaten is 30 years. E) Average of recent age of Ajay and Bharti is 2 more than the average of age of Bharti and Dhruv.
Each of the questions below consists of a question and three statements number I, II and III given below it. You have to decide whether the data provided in the statement are sufficient to answer the question. Ali is 3 years older than Bela who is 5 years older than Chals. The ratio of age of Dyna and Ena after two years will be 3 : 4 years. Sum of ages of Dyna, Ena, Fanny and Geet is 50 years. What is the present age of Geet? Statement I: The ratio of ages of Dyna and Fanny is 7 : 15 respectively and Ali is 18 years old. Statement II: The sum of ages of Ena and Fanny is 25 years. Statement III: The sum of ages of Dyna and Ena is 17 years and fanny is 8 years older than Dyna.
Questions below followed by three quantities. Find the relationship between them. Quantity I: Average age of 14 members of team is 25 years. While oldest member of the team is 26 years older than youngest member of the team. Out of remaining 12 members of team, average age of six members of team is 28 years and the remaining six members is 20 years. What is the age of oldest member of the team? Quantity II: Average age of Nitu, Rekha and Shyam is 17 years. Two new persons Divya and Raju joined them so that average age of all become 19 years. If Divya is 2 years older than Raju and Rekha is 2 years older and 1 year older than Shyam and Nitu respectively. What is sum of the average age of Nitu and Shyam together and average age of Divya and Rekha together? Quantity III: The average age of father, mother and their two sons is 27.5. Five years ago, the ratio of ages of father, mother and two sons (elder and younger) is 7 : 5 : 2 : 1. Find the sum of ages of two sons after 7 years.
Sudha is twice as old as Radha. If 6 years is subtracted from Radha's age and Sudha's age is increased by 4 years, then Sudha's age will be four times that of Radha. What will be the ages of Sudha and Radha, 2 years ago from today?
Given below are quantities named A,B and C. Based on the given information, you have to determine the relation between the quantities. You should use the given data and your knowledge of mathematics to choose among the possible answer. Akash’s present age is six years less than Badshah’s age after nine years. The ratio of present age of Badshahand RAFTAAR is 5:9. Raftaar is 21 years younger than Denny and Denny is three years older than Honey. Square of the Honey’s present age is 1350 more than 15 times of Honey’s present age? Quantity A: What is the difference between AKASH’s present age and HONEY’s age after 16 years? Quantity B: After 6 years Mankirat’s age is twice that of Akash’s present age. Diljeet’s present age is 3.5 times of 25% of sum of present age of Mankirat and A. What is the present age of Diljeet? Quantity C: Twice of A’s present age is eight years more than that of Babbu’spresent age, then find the Babbu’s present age?
A has three daughters whose ages are in the ratio 7 ∶ 8 ∶ 9 (at present). Their husbands are 3, 2 and 6 years respectively elder to their wives. Each one of the couple has a child whose age is 1/5th the sum of ages of their parents. If sum of age of the grandchildren of A is 31, then what is the sum of ages of the son-in-laws of A? (in years) All the ages are measured at present.
The ratio of the amount invested by Radha and Ram on simple interest scheme is 5 : 6 for 3 and 4 years respectively. The difference between the rate of interest at which Radha and Ram invested is 7%. Radha got Rs. 750 as simple interest and Ram got Rs. 114 more than Radha as simple interest. Find the difference between the amount invested by Ram and Radha.
Ali is 3 years older than Bela who is 5 years older than Chals. The ratio of age of Dyna and Ena after two years will be 3 : 4 years. Sum of ages of Dyna, Ena, Fanny and Geet is 50 years. What is the present age of Ena? Statement I: Ali is one year younger to Geet. Sum of age of Ali and Chals is 20 years. Statement II: Sum of ages of Dyna and Ena is 17 years. Statement III: Sum of ages of Bela and Dyna is 32 years. Which of the above statement is redundant to find the answer of the given question?
There are four friend, Megha, Ujjwala, Shivangi and Harsha. The age of Harsha is (P – 7) years. The ratio of the age of Harsha 7 years hence to the age of Ujjwala 2 years before is 6 : 5. The ratio of the age of megha 1 year before to the age of Harsha 3 years hence is 3 : 4. Harsha is 5 years older than Ujjwala, then find the age of shivangi whose age is 1 year less than average age of other 3 friends.