Let A's age 10 years ago be x years

Then B's age 10 years ago be 2x yeats

Total of their present ages =

=

= 35 years

A) 15 years | B) 16 years |

C) 18 years | D) 21 years |

Explanation:

Let the present ages of Arun and Harish be 4x and 3x years respectively.

Then, 4x + 6 = 26 => x = 5

Harish's age = 3x = 15 years.

A) 30 | B) 32 |

C) 38 | D) None |

Explanation:

Let Raju's age at the time of his marriage = X years

Then from given data

=> X + 8 = 6/5 X

X = 40.

Since got married 8 years ago, his present age = 48

His sister is 10 years younger => 48 - 10 = 38 years.

A) 10 yrs | B) 11 yrs |

C) 12 yrs | D) 13 yrs |

Explanation:

Let C's age be x years.

Then, B's age = 2x years.

A's age = (2x + 2) years.

(2x + 2) + 2x + x = 27

5x = 25 => x = 5

Hence, B's age = 2x = 10 years.

A) 19 years | B) 16 years |

C) 18 years | D) 20 years |

Explanation:

Present total age of the members = 26(5) = 130 years.

Present age of the youngest member = 10 years

Present total age of the remaining four members = 130 -10 = 120 years

Their average age at the time of the birth of the youngest member = = 30 - 10 = 20 years.

A) 41 yrs | B) 40 yrs |

C) 37 yrs | D) 33 yrs |

Explanation:

Let the present ages of Ajay and Vijay be 'A' and 'V' years respectively.

=> A - 8 = 4/3 (V - 8) and A + 8 = 6/5 (V + 8)

=> 3/4(A - 8) = V - 8 and 5/6(A + 8) = V + 8

V = 3/4 (A - 8) + 8 = 5/6 (A + 8) - 8

=> 3/4 A - 6 + 8 = 5/6 A + 20/3 - 8

=> 10 - 20/3 = 10/12 A - 9/12 A

=> 10/3 = A/12 => A = 40.