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Mathematics 21 Online
OpenStudy (anonymous):

The cost per minute of a conference phone call, originally $2.80, increased by 20%. What is the new price? (I tried on this question but I got confused, can someone work this out so that I can see how to do it)

OpenStudy (hoblos):

3.36

OpenStudy (anonymous):

2.8 x 1.2 = 3.36

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