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29 March, 09:18

Raul has $460 in his checking account. Each month, $45 is automatically deducted from his account to pay for his cell phone plan. He makes no other deposits or withdrawals. He wants to always have more than $100 in his account. What is the greatest number of months he can pay for his cell phone and still have more than $100 in his account?

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  1. 29 March, 09:33
    0
    You need to take the sum of the account minus 101 because he always wants more than 100 in there and then divide the answer by 45

    (460-101) / 45 = Months

    359/45=Months

    7 = Months he can pay for
  2. 29 March, 09:37
    0
    X=number of months

    how much is deducted total=number of months times amount deducted per m onth

    amount deducted per month=45

    number of months=x

    how much deducted total=45x

    460-deducted total is more than 100

    460-45x>100

    solve for x

    add 45x to both sides

    460>100+45x

    subtract 100

    360>45x

    divide both sides by 45

    8>x

    answer is 7 months

    if he does 8 months, then he will have exatly 100 and 100 is noe more than 100

    answer is 7 months
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