Percentage distribution of teachers who teach six different subjects

Total number of teachers = 1800

Important for :

1

A

If | 2 | th of physics are female teachers, then |

9 |

Male teachers = 1 – | 2 | = | 7 | th of physics |

9 | 9 |

Let's take x% of male physics teacher equal to Chemistry teachers, then

⇒ x% of Chemistry teacher = | 7 | th of physics |

9 |

⇒ x% of (23% of 1800) = | 7 | th of (17% of 1800) |

9 |

⇒ x% of 23 = | 7 | th of 17 |

9 |

⇒ x = | 7 | × | 17 | × 100 = 57.4% ≈ 57% |

9 | 23 |

Hence, option A is correct.

2

3

4

5

C

Percentage of Mathematics teacher = 13%After increased by 50% it becomes, 13 + 6.5 = 19.5%

Similarly,

Percentage of Hindi teacher = 8%

After increased by 25% it becomes, 8 – 2 = 6%

Now, percentage of total teachers becomes, 19.5 + 6 = 25.5%

Therefore, 25.5% of 1800

⇒ | 25.5 | × 1800 = 25.5 × 18 = 459. |

100 |

Hence, option C is correct.

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