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Lv 6
? asked in 科學及數學數學 · 1 decade ago

有題數學唔識(中一),幫幫手,唔該。

1.Calvan is the chairman of Social Services Group. thegroup intends to treat some senior citizens to visiting the Tsing Ma Bridge and the new airport .For this activity, the Social Services Group pays $510 to hire a coach and $12 for food and drinks for each participant. Eight group members have signed up for the activity .if the total expenditure for the activity must be less than $1150, find the greatest number of senior citizens that can be invited.

2 Answers

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  • 1 decade ago
    Best Answer

    the fixed expenditure for the activity is 510, so you have to deduct 510 first

    1150- 510 = 640

    the expenditure for food and drinks for each participant

    640/12 = 53.33333-----------

    that means the food and drinks is only enough for 53 people

    so the greatest senior citizens that can be invited are 53

  • 1 decade ago

    (1150-510)/12=53.3...

    the greatest number of senior citizens that can be invited is 53.

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