Question 1037854
Go stepwise according to the described process.  Give a variable to what the question asks.
Alternatively, give a variable to the final selling price.


SELL FOR 30% PROFIT
{{{155*1.30}}}


SOLD AT 10% LESS THAN MARKED
{{{155*1.30-0.10(155*1.30)}}}



WHAT PERCENT ACTUAL PROFIT?
Revenue minus Cost is the amount of profit.
{{{highlight_green((155*1.3-0.1(155*1.3))-155)}}}
----
{{{highlight_green(26.35)}}}-----the AMOUNT of profit.


PERCENT PROFIT
{{{26.36*100/155=highlight(17)percent}}}





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WHY THE 1.3  FACTOR


Thirty percent more of something means  100 percent PLUS  the fraction {{{30/100}}} more of the something.  One hundred percent of something is still all the 1 of this something counting as ONE; and the additional fraction {{{30/100}}}  is {{{0.3}}} of this something.


To count the 30% increase you have   a factor  {{{1+0.3}}}.