Q:

As the ratio of their present ages is 3 : 4 , let their present ages be 3X and 4X.

So, 5 years ago, as the ratio of their ages was 5 : 7, we can write (3x-5) : (4x-5) = 5 : 7. Solving, we get X = 10. Hence, their present ages are 3X = 30 and 4X = 40

Q:

A) 23 : 19 | B) 17 : 11 |

C) 27 : 20 | D) 34 : 23 |

2
245

Q:

A) 20 years | B) 18 years |

C) 24 years | D) 22 years |

4
421

Q:

A) 40, 44, 36 | B) 44, 40, 36 |

C) 34, 26, 30 | D) 30, 26, 34 |

1
336

1
297

Q:

A) 17 years | B) 16 years |

C) 15 years | D) 14 years |

1
402

0
330

Q:

A) 16,36,28 | B) 16,28,36 |

C) 20,35,45 | D) 12,21,27 |

9
603

3
413