A) Feminine titles | B) Masculine titles |

C) Both Feminine and Masculine titles | D) None of the above |

Explanation:

As they are the titles of male gender, they are called as Masculine titles.

A) 68 kmph | B) 52 kmph |

C) 76 kmph | D) 50 kmph |

Explanation:

Let the speed of the faster train be 'X' kmph,

Then their relative speed= X - 48 kmph

To cross slower train by faster train,

Distance need to be cover = (400 + 600)m = 1 km. and

Time required = 180 sec = 180/3600 hr = 1/20 hr.

Time = Distance/Speed

=> 1/20 = 1/(x-48)

X = 68 kmph

A) 10 sec | B) 48 sec |

C) 36 sec | D) 56 sec |

Explanation:

Given speed of jogger = 9 kmph

Speed of train = 45 kmph

As they are in same direction,

Relative speed = 45 - 9 = 36 kmph = 36x5/18 = 10 m/s

Distance = 240 + 120 = 360 mts

Time = distance/speed = 360/10 = 36 sec.

A) 6 | B) 9 |

C) 7 | D) 5 |

Explanation:

Arithmatic mean = sum/members

=> (1x1 + 2x2 + 3x3 + 4x4 + 5x5 + 6x6 + 7x7) / (1 + 2 + 3 + 4 + 5 + 6 + 7)

=> 140/28 = 5

A) 20 | B) 35 |

C) 54 | D) 40 |

Explanation:

Numbers of students in section A = x

∴ Numbers of students in section B and C = (100 – x)

∴ x 70 + (100 – x) 87.5 = 84 100

=> 70x + 87.5 100 – 87.5x = 8400

=> 8750 – 17.5x = 8400

=> 17.5x = 8750 – 8400 => x = 20.