The sign on a rack of sports coats reads : " All prices already marked down 30% !" What is the regular selling price of a coat marked at
a) $ 100
b) 196.49
Hello, diehardmath4!
The sign on a rack of sports coats reads: "All prices already marked down 30%!"
What is the regular selling price of a coat marked at
a) $100
b) $196.49
The sale price is 70% of the regular price: .$\displaystyle S \:=\:0.7R$
. . Hence: .$\displaystyle R \:=\:\frac{S}{0.7}$
$\displaystyle a)\;\;S = \$100 \quad\Rightarrow\quad R \;=\;\frac{100}{0.7} \;\approx\;\$142.86$
$\displaystyle b)\;\;S = \$196.49 \quad\Rightarrow\quad R \;=\;\frac{196.49}{0.7} \;=\;\$280.70$