Important for :

1

C

Let Prena’s salary be Rs x.

Now, according to the question,

90% of 15% of x = 2896

∴ x = | 2896 | R ≈ 21450 |

0.9 × 0.15 |

Hence, option (C) is correct.

2

A

Let the amount be ‘x’∴ | x × 3.5 × 12 | – | x × 3.5 × 8.5 | = 189.875 |

100 | 100 |

42x – 29.75x = 18987.5

∴ x = | 18987.5 | = 1550 |

12.25 |

Hence, option (A) is correct.

3

B

Total number of sweets got by all the employees= 50 × | 25 | × 50 = 625 |

100 |

Total number of sweets got by all the managers

= 12 × | 30 | × 50 = 180 |

100 |

Reqd % = | 625 | × 100 = 347.22% |

180 |

Hence, option B is correct.

4

A

Let the first investment be 3x and then second investment be 5x( | 3x × | 15 | – 5x × | 10 | ) | ||

Combined loss % = | 100 | 100 | × 100 | ||||

3x + 5x |

( | 45x | – | 50x | ) | |||

= | 100 | 100 | × 100 | ||||

8x |

= | ( | – | 5x | ) | × 100 |

8x × 100 |

= – | 5 | % (loss). |

8 |

Hence, option (A) is correct.

5

C

Let CP of 1 article = Rs. 100CP of 16 articles = Rs. 1600

Now he is selling 4 articles for free after purchase of 12 articles. So, SP of 12 articles = 120% of CP of 16 articles

= 120% of 1600 = 1920

SP of 1 article = Rs. | 1920 | = Rs.160 |

12 |

MP of 1 article after 20% discount on SP

= 160 × | 100 | = Rs. 200 |

80 |

Hence required percent = (200 – 100) × 100 = 100%

Therefore, option (C) is correct.