Answer:
27.57\%
Step-by-step explanation:
we know that
In this problem
$42 represent the 100%
so
using proportion
Find out the percent increase of the difference ($60.$48-42)=$11.58
[tex]\frac{\$42}{100\%}=\frac{\$11.58}{x}\\\\x=100(11.58)/42\\\\x=27.57\%[/tex]