# Job Roles

Q:

A) 2 yrs | B) 12 yrs |

C) 18 yrs | D) 6 yrs |

Answer & Explanation
Answer: C) 18 yrs

Explanation:

Explanation:

Let Siya's age = x

Then Riya's age = 4x

But given Riya's age = 24

=> 4x = 24 => x = 6

Hence Siya's age = 6 yrs

=> The age difference = 24 - 6 = 18 yrs.

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Q:

A) 1102 km | B) 1060 km |

C) 960 km | D) 1250 km |

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Q:

A) 5 kmph | B) 7 kmph |

C) 3 kmph | D) 4 kmph |

Answer & Explanation
Answer: D) 4 kmph

Explanation:

Explanation:

Speed of Man = 4.5 kmph

Speed of stream = 1.5 kmph

Speed in DownStream = 6 kmph

Speed in UpStream = 3 kmph

Average Speed = (2 x 6 x 3)/9 = 4 kmph.

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Q:

A) 400 m | B) 300 m |

C) 500 m | D) 600 m |

Answer & Explanation
Answer: A) 400 m

Explanation:

Explanation:

Speed = 78 x 5/18 = 65/3 m/sec.

Time = 1 min = 60 sec.

Let the length of the train be x meters.

Then, (900 + x)/60 = 65/3

x = 400 m.

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Q:

A) 24% | B) 23 1/3% |

C) 25 1/2% | D) 22 8/9 % |

Answer & Explanation
Answer: B) 23 1/3%

Explanation:

Explanation:

y=100 x=130

130---------30

100---------? => 23 1/3%

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