Answer :
Answer:
Karl would have saved $2 and 50 cents if he had waited a day.
Step-by-step explanation:
The total cost of 5 folders Karl bought is [tex]\$2.5 * 5 = \$ 12.5[/tex].
The following day, there was 20% off sale, which means if Karl had waited one day, he would have bough the folders [tex]100\% -20\% =80\%[/tex] of the original price.
80% of $2.5 is
[tex]$\frac{80\%}{100\%} * \$2.5$[/tex]
[tex]=0.8*\$2.5 = \$2[/tex]
the price of each folder would have been $2.
Therefore, if Karl had waited a day, he would have bought 5 folders
for 2 * 5 = $10 instead of $12.5, thus saving $12.5 - $10 = $2.5.