The original cost of a cell phone is mathematically given as
0.65x = sale cost
This is further explained below.
What is the original cost?
The complete amount of money spent on the acquisition of an item is referred to as the "original cost." When calculating the initial cost of an asset, all of the costs associated with acquiring the asset and making use of it are included in. This includes both direct and indirect costs.
Generally, the equation for the original cost is mathematically given as
original cost - (percentage off)(original cost) = sale cost
Therefore
x - 0.35x
0.65x = sale cost
In conclusion, The original cost of a cell phone is
0.65x = sale cost
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