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  • Question
  • The average temperature of the town in the first four days of a month was 58 degrees. The average for the second, third, fourth and fifth days was 60 degrees. If the temperatures of the first and fifth days were in the ratio 7 : 8, then what is the temperature on the fifth day ?


  • Options
  • A. 62 degrees
  • B. 64 degrees
  • C. 65 degrees
  • D. 66 degrees

  • Correct Answer
  • 64 degrees 

    Explanation

    Sum of temperatures on 1st, 2nd, 3rd and 4th days = (58 * 4) = 232 degrees ... (1)

    Sum of temperatures on 2nd, 3rd, 4th and 5th days - (60 * 4) = 240 degrees  ....(2)

    Subtracting (1) From (2), we get :

    Temp, on 5th day  - Temp on 1st day  = 8 degrees.

    Let the temperatures on 1st and 5th days be 7x and 8x degrees respectively.

    Then, 8x - 7x = 8 or x = 8.

    Temperature on the 5th day = 8x = 64 degrees.


  • More questions

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      A person sold an article for ? 3600 and got a profit of 20%. Had he sold the article for ? 3150, how much profit would he have got?

    • Options
    • A. 4%
    • B. 5%
    • C. 6%
    • D. 10%
    • Discuss
    • 2. 
      Two lots of onions with equal quantity, one costing ? 10 per kg and the other costing ? 15 per kg, are mixed together and whole lot is sold at ? 15 per kg. What is the profit or loss?

    • Options
    • A. 10% loss
    • B. 10% profit
    • C. 20% profit
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    • 3. 
      By selling 32 orange for ? 30 a man loses 25%. How many oranges should be sold for ? 24 so as to gain 20% in the transaction?

    • Options
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    • C. 32
    • D. 28
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    • 4. 
      Kamlesh purchased 120 reams of paper at ? 100 per ream and the expenditure on transport was ? 480. He had to pay an octroi duty of 50 paise per ream and the coolie charges were ? 60. What should he charge per ream to gain 40%?

    • Options
    • A. ?155
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    • 5. 
      A dishonest dealer sells his goods at 10% loss on cost price and uses 30% less weight. What is his profit or loss per cent?

    • Options
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    • 6. 
      A man sold two houses for ? 96000 each. In the sale of the first house, he incurred 20% profit and in the sale of the second, he incurred 20% loss. what is the gain or loss percentage in total?

    • Options
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    • 7. 
      A man sold two watches, each for ? 495. If he gained 10% on one watch and suffered a loss of 10% on the other, then what is the loss of gain percentage in the transaction?

    • Options
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    • 8. 
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    • Discuss
    • 9. 
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    • 10. 
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