Mathematics, 26.06.2020 19:01, bearminar2156

Darnell and Nicholas are comparing the international calling plans on their cell phones. On his plan, Darnell pays $1 just to place a call and $3 for each minute. When Nicholas makes an international call, he pays $5 to place the call and $1 for each minute. A call of a certain duration would cost exactly the same under both plans. What is the duration?

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Darnell and Nicholas are comparing the international calling plans on their cell phones. On his plan...