Let the average after 7th inning = x

Then average after 16th inning = x - 3

16(x-3)+87 = 17x

x = 87 - 48 = 39

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.

A) Rs. 8840 | B) Rs. 11,500 |

C) Rs. 12,800 | D) Rs. 9450 |

Explanation:

Manager's monthly salary

= Rs. (1900 x 25 - 1500 x 24) = Rs. 11,500

A) 34 | B) 36 |

C) 38 | D) 40 |

Explanation:

M + Tu + W + Th = 4 x 48 = 192

Tu + W + Th + F = 4 x 46 = 184

M = 42

Tu + W + Th = 192 - 42 = 150

F = 184 – 150 = 34

A) 34 | B) 36 |

C) 35 | D) 37 |

A) Rs. 3748 | B) Rs. 3847 |

C) Rs. 3944 | D) Rs. 3154 |

Explanation:

Let the side of the square plot be 'a' ft.

Given area of the plot (a x a) = 289 => a = 17

Length of the fence = Perimeter of the plot = 4a = 68 ft.

Cost of building the fence = 68 x 58 = Rs. 3944.