the 112 4{th} -grade students at Edgemont School donate pennies to raise 75 dollar for a local charity. What is the minimum number of pennies each stu

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the 112 4{th} -grade students at Edgemont School donate pennies to raise 75 dollar for a local charity. What is the minimum number of pennies each student needs to bring if they want to meet their goal of collecting 75 dollar? (1 dollar = 100 pennies)

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  1. Đáp án:each student minimum 7 pennies

     

    Giải thích các bước giải:

     a sutdent needs to bring=75*100/1124=6,67.. pennies

    so a student min number 7 pennies

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  2. We have 

    $75\$ = 75 \times 100 = 7500$ (penny)

    Divide 7500 for 112 we have

    $7500 :112 = 66$ with the residue is 108

    Then each students have to bring at least 67 pennies to meet their goal.

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