### Discussion :: Problems on Ages - Data Sufficiency 1 (Q.No.1)

Each of the questions given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. Read the both statements and

- Give answer (A) if the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question.
- Give answer (B) if the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question.
- Give answer (C) if the data either in Statement I or in Statement II alone are sufficient to answer the question.
- Give answer (D) if the data even in both Statements I and II together are not sufficient to answer the question.
- Give answer(E) if the data in both Statements I and II together are necessary to answer the question.

Geetha said: (Apr 30, 2012) | |

I can't understand this. Can anyone explain this in detail. |

Deb said: (Aug 24, 2012) | |

I don't understand this method please another method give and help me. |

Palak said: (Oct 4, 2012) | |

Geeta and deb-in 1st sonia's(S) age is 5 time the deepak(D) present age i.e S=5D OR D=S/5 in 2nd equation,5 years ago her age was 25 times the deepak at that time,i.e we deduce ages for 5 yrs ago i.e -5 or S-5 IS 25(D-5)as deepak age is also reduce by 5 from present age.on solving the equation comes S=25D-120.on putting value of D from first eqnt into 2nd we can get S i.e 30 |

Santosh Patil said: (Jan 8, 2016) | |

II. S-5 = 25 (D-5) S = 25D - 120......(ii) 25*d = 25d.... & 25*5= 125 ok then 120 is what? |

Rajat Jimmy said: (Feb 20, 2016) | |

Solution is correct, i.e. 20. If you related bit 1 and bit 2, then solution is 30. But in data sufficiency, our main approach is to get solution thru individually bit no. So in this case solution 30 violates. |

Balakumar said: (Sep 21, 2016) | |

S = 5D. D = S/5 Eq -> 1. Then S - 5 = 25(D - 5). S = 25D - 120 Eq -> 2. In that Eq 1, D value substitute in Eq 2. Then S = 25 * (S/5) - 120. Then 5 IS SUBSTITUTE TO (S & 120). Then 5S = 25S - 600. 25S - 5S = 600. 20S = 600. S = 600/20. S = 30. |

Ratz said: (Oct 13, 2016) | |

I really don't understand this. Please help me. |

Amrish said: (Oct 14, 2016) | |

According to I st statement. Let D's age is X year then S's age is 5X year. According to II. => 5 year ago, S's age was 5X - 5 & D's age was X - 5. But it say that it 5 yr ago S's age was 25 times of D's age at that time. So, 5X - 5 = 25(X - 5) 20X = 120; X = 6. Now we can find age of S, D. S = 5 * 6 = 30yr. D = 6yr. So, both statement are necessary. |

Bharathi said: (Dec 6, 2017) | |

Could anyone please explain clearly? |

Raunak said: (Jul 27, 2018) | |

Could anyone please explain clearly? |

Shubham said: (Feb 18, 2019) | |

s=d5 then let s value =d5. then put in (ii) s=25d-120, d5=25d-120, 120=25d-5d, 120=20d ......then d=6 and s=30. |

Priya said: (Aug 21, 2019) | |

Where did that 4S come from?! Please explain. |

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