Q:

A) 21 | B) 22 |

C) 23 | D) 24 |

Answer: C) 23

Explanation:

Explanation:

Let the numbers be x, x + 1, x + 2, x + 3, x + 4, x + 5 and x + 6,

Then (x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6)) / 7 = 20.

or 7x + 21 = 140 or 7x = 119 or x =17.

Latest number = x + 6 = 23.

0
15

0
61

Q:

A) 62 kg | B) 61 kg |

C) 60 kg | D) 63 kg |

1
118

Q:

A) 59.2kg | B) 58.6kg |

C) 58.8kg | D) 59kg |

2
138

1
134

1
218

2
285

Q:

A) 33 | B) 34 |

C) 39 | D) 29 |

Answer & Explanation
Answer: A) 33

Explanation:

Explanation:

Let the fifth number be x.

The average of the first four numbers = 3x

Sum of all the first four numbers = 3x = 12x

The average of all the five numbers = 85.8

Sum of all the five numbers = 85.8 5 = 429

Sum of all the first four numbers + 5th number = 429

12x + x = 429

x = 429/13 = 33

The 5th number is 33.

1
230