Answer :
Set up a proportion, where x = the percentage:
[tex]\frac{56}{128}=\frac{x}{100}[/tex]
Then, cross multiply and solve to isolate the x:
[tex]\frac{56}{128}=\frac{x}{100}\\128x=5600\\x=5600/128\\x=43.75[/tex]
So, 43.75% of the students went on trips.
[tex]\frac{56}{128}=\frac{x}{100}[/tex]
Then, cross multiply and solve to isolate the x:
[tex]\frac{56}{128}=\frac{x}{100}\\128x=5600\\x=5600/128\\x=43.75[/tex]
So, 43.75% of the students went on trips.