Beach Day by Rodger Bliss
October 2022
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Jiminy Cricket

A cricketer’s average in his first 18 innings was 16.5 runs. After a further 8 innings, his average had increased to 32.5 runs. What was his average for the last 8 innings?

Note: you don’t need any cricket skills to solve this puzzle, nor do you need to know what an innings consists of.

 

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3 guesses to Jiminy Cricket


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  • Lou

    49 u add 16.5 plus 32.5 i think i am not sure :|

  • Ben Tennen

    68.5

    Jiminy averaged 16.5 runs over 18 innings. Total runs over 18 innings = 297 (16.5 * 18)
    Jiminy averaged 32.5 runs over 26 (18+8) innings. Total runs over 26 innings = 845 (32.5 * 26)
    In the last 8 innings, Jiminy scored 548 runs (845-297)
    Avg Runs = 548 runs / 8 innings = 68.5 runs / inning

  • Dude

    Yes Ben, 68.5 is correct.

    His average was 68.5 runs.

    After the initial 18 innings, the average was 16.5, giving a total of 18 * 16.5 = 297 runs.

    There were 26 innings in total, with an average of 32.5 runs.

    Therefore an overall total of 26 * 32.5 = 845 runs.

    Therefore 845 – 297 = 548 runs were run in the final 8 innings, giving an average of 548 / 8 = 68.5 runs.

    You are today’s winner.