The cost C of printing a magazine is jointly proportional to the number of pages p in the magazine and the number of magazines printed m
a)Write an equation that expresses this joint variation
b)Find the constant of proportionality if the printing cost is $120,000 for 4000 copies of a 120-page magazine
c)How much would the printing cost be for 2500 copies of an 85-page magazine?

Question

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The Answer of The cost C of printing a magazine is jointly proportional to the number of pages p in the magazine and the number of magazines printed m
a)Write an equation that expresses this joint variation
b)Find the constant of proportionality if the printing cost is $120,000 for 4000 copies of a 120-page magazine
c)How much would the printing cost be for 2500 copies of an 85-page magazine?

The Cost C of Printing a Magazine Is Jointly Proportional