Answer
Find out the percent increase in the price per cheese stick.
To prove
As given
Cheese sticks that were previously priced at "5 for $1" are now "4 for $1".
i.e previously the price of the 5 cheese stick is $1 .
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= 0.2
Now the price of the 4 cheese stick is $1 .
\(one\ cheese\ sticks\ price = \frac{1}{4}\)
= 0.25
Change in price per cheese stick = now price - previous price
= 0.05
Formula
\(Percentage\ increase = \frac{Change\ in\ price\ per\ cheese\ stick\times 100}{Previous\ price\ per\ cheese\ stick}\)
Put all the value in the formula
\(Percentage\ increase = \frac{0.05\times 100}{0.2}\)
= 25%
Therefore the percent increase in the price per cheese stick is 25%.
