The telephone company charges a total of 0.80 for the first 3 minutes and 0.23 for each additional minute for a long distance call to a particular city. IF a call to this city costs $4.00 how long was the call?
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The telephone company charges a total of 0.80 for the first 3 minutes and 0.23 for each additional minute for a long distance call to a particular city. IF a call to this city costs $4.00 how long was the call?
Straightforward enough.
$4.00 - 0.80 = x
x/0.23 = y minutes
so y +3 = total minutes.
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