Acomputer store bought a program at a cost of $10 and sold it at a selling price of $13. find the percent markup. round to the nearest whole number.

30

Step-by-step explanation:

Cost = $10

Selling price = $13

Markup = selling price - cost price

             = $13 - $10

             = $3

percent markup = markup/cost

                          = $3/$10

                          = 0.3 = 30%

Percentage markup is 30

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step-by-step explanation: