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02-09-2018
Mathematics

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A long-distance telephone company charges a rate of 6 cents per minute or a 40-cent minimum charge per completed call, whichever is greater. Find the cost, in cents per minute, for a 3-minute call.

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sqdancefan sqdancefan

02-09-2018

Given

charges per call are the maximum of $0.40 or $0.06 per minute

Find

the charge for a 3-minute call

Solution

maximum( $0.40, $0.06 × 3 ) = maximum( $0.40, $0.18 ) = $0.40

The charge for a 3-minute call is $0.40.

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