Home
Class 14
MATHS
The average marks of 18 students in an e...

The average marks of 18 students in an examination was 60. It was later found that the marks of one student had been wrongly entered as 63 instead of 36. The correct average is:
किसी परीक्षा में 18 छात्रों के अंको का औसत 50 था। बाद में यह पाया गया कि किसी छात्र के अंक 36 के बजाय 63 लिखे गए थे। सही ओसत ___ होगा।

A

59

B

59.5

C

58

D

58.5

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • 2017 TIER-II PAPER(8)

    CHAMPION PUBLICATION|Exercise EXERCISE|100 Videos

  • 2018 TIER-II PAPER(4)

    CHAMPION PUBLICATION|Exercise EXERCISE|100 Videos

Similar Questions

Explore conceptually related problems

The average marks of 40 students in an examnation was 25. It was later found that the marks of one student had been wrongly entered as 73 instead of 37.What is the value of correct average?

In a class, the average score of thirty students on a test is 69. Later on it was found that the score of one student was wrongly read as 88 instead of 58. The actual average score is: एक कक्षा में, किसी परीक्षा में तीस छात्रों का औसत अंक 69 है | बाद में, यह पाया गया कि एक छात्र का अंक गलती से 58 के बजाय 88 दर्ज कर लिया गया था | वास्तविक औसत अंक कितना है ?

The average marks of 50 students in a class was found to be 64. If the marks of two students were incorrectly entered as 38 and 42 instead of 83 and 24 respectively, then what is the correct average? किसी कक्षा में 50 छात्रों के औसत अंक 64 पाए गए | यदि दो छात्रों के अंक भूलवश 83 एवं 24 के बजाय क्रमशः 38 और 42 लिखे गए थे, तो सही औसत ज्ञात करें |

The average marks of 45 students was found to be 66. If the marks of two students were incorrectly entered as 28 and 64 instead of 82 and 46 respectively, then what is the correct average? 45 छात्रों के औसत अंक 66 पाए गए | यदि दो छात्रों के अंक 82 और 46 के बजाय भूलवश क्रमशः 28 और 64 लिखे गए थे, तो सही औसत क्या होगा ?

The average marks of 40 students in an English exam is 72. Later it is found that three marks 64, 62 and 84 were wrongly entered as 68, 65 and 73. The average after mistakes were rectified is अंग्रेजी के परीक्षा में 40 छात्रों का औसत अंक 72 है। बाद में पता चला है कि तीन अंक 64, 62 और 84 गलती से 68, 65 और 73 लिख दिए गए थे। गलतियाँ सुधारने के बाद औसत है-

The average marks of 40 students was found to be 68. If the marks of two students were incorrectly entered as 48 and 64 instead of 84 and 46 respectively, then what is the correct average? 40 छात्रों के औसत अंक 68 पाए गए | यदि दो छात्रों के अंक भूलवश 84 एवं 46 के बजाय क्रमशः 48 और 64 के रूप में शामिल किये गए हैं, तो सही औसत ज्ञात करें |

CHAMPION PUBLICATION-2017 TIER-II PAPER(9)-EXERCISE
  1. Rs 10,200 has to be divided between A, B & C so that A gets 2/3 of wha...

    Text Solution

    |

  2. Before a battle there were the ratio of captains to soldiers was 2: 7....

    Text Solution

    |

  3. The average marks of 18 students in an examination was 60. It was late...

    Text Solution

    |

  4. In a class of 60 students there are 20 girls who scored an average of ...

    Text Solution

    |

  5. The average of 44 consecutive odd numbers is 144. What is the largest ...

    Text Solution

    |

  6. A batsman makes 100 runs in the 25th match of his career. His average ...

    Text Solution

    |

  7. An oil refinery buys oil at Rs 3600 per barrel. There is 10% wastage. ...

    Text Solution

    |

  8. A vendor sells a coconut at Rs 24 and suffers 24% loss. If he wants to...

    Text Solution

    |

  9. A villager buys a goat and a sheep together for Rs 14,250. He sold the...

    Text Solution

    |

  10. On a certain item profit is 120%. If the cost price increases by 10% t...

    Text Solution

    |

  11. If 35% are the passing makes. A student gets 200 marks yet fails by 24...

    Text Solution

    |

  12. A student gets 22 marks more in French than what she got in German. He...

    Text Solution

    |

  13. 2% of a = b, then b% of 10 is the same as

    Text Solution

    |

  14. A man's annual income has increased by Rs. 1.2 lakhs but the tax on in...

    Text Solution

    |

  15. A car travelling at an average speed of 72 km/hr takes 9 minutes to tr...

    Text Solution

    |

  16. Train A takes 1 hour more than train B to travel a distance of 720 km....

    Text Solution

    |

  17. Two cars A and B travel from one city to another city, at speeds of 60...

    Text Solution

    |

  18. B starts 4.5 minutes after A from the same point, for a place at a dis...

    Text Solution

    |

  19. If compound interest received on a certain amount in the 3rd year is ₹...

    Text Solution

    |

  20. The amount received at 10% per annum com pound interest after 3 yrs is...

    Text Solution

    |