Cost price of a TV set = $900
Selling price of this TV set = $1125
Since Selling price > Cost Price, Alex had a profit.
Profit earned by Alex :
[tex]= \tt \: Selling \: price - Cost \: price [/tex]
[tex]= \tt1125 - 900[/tex]
[tex] =\tt \$225[/tex]
Thus, the profit Alex made = $225
We know that :
[tex]\color{hotpink}\tt \: Profit \: percentage =\color{plum} \frac{profit \times 100}{cost \: price} [/tex]
Percentage of profit alex earned :
[tex] = \tt \frac{225 \times 100}{900} [/tex]
[tex] =\tt \frac{22500}{900} [/tex]
[tex]\color{plum}= \tt25\%[/tex]
Thus profit percentage = 25%
Therefore, percentage of profit Alex earned by selling the TV set = 25%
