The manufacturing cost of a cell phone was $136. sellers first marked up the cost by 25 percent. sales were poor, so sellers decreased the markup to 17 percent. calculate the old and new selling prices. selling price = original cost + markup value

old selling price = $170
new selling price = $159.12

Explanation:
Part (a) getting old selling price:
The equation to get the selling price is given as follows:
selling price = original cost + markup value

We are given that:
original cost = $136
markup value = 25% = 25% * 136 = 0.25 * 136 = $34

Substitute in the equation to get the old selling price as follows:
old selling price = 136 + 34 = $170

Part (b): getting the new selling price:
The equation to get the selling price is given as follows:
selling price = original cost + markup value

We are given that:
original cost = $136
markup value = 17% = 17% * 136 = 0.17 * 136 = $23.12

Substitute in the equation to get the old selling price as follows:
old selling price = 136 + 23.12 = $159.12

Hope this helps :)

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