Q91 of 125 Page 38

A picture hall has seats for 820 persons. At a recent film show, one usher guessed it was full, another that it was full. The ticket office reported 648 sales. Which usher (first or second) made the better guess?

Given:


Seats in picture hall = 820


Persons reported in hall = 648


Guess made by 1st user = full


Guess made by 2nd user = full


Formula UsedTheory:


Less the difference between guessed value and real value


More it will be a better guess.


⇒ The guess made by 1st user:-


full = × 820


= 3 × 205


= 615


Difference in reality and guessed = 648 – 615


= 33


⇒ The guess made by 2nd user:-


full = × 820


= 2 × 273.33


= 546.66


Difference in reality and guessed = 648 – 546.66


= 101.33


∴ The difference of guessed from reality is lower in 1st user


Conclusion:1st user made a better guessed


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