Answer: 40%
Explanation:
to find percent you need to set up a proportion: part/whole=percent/100
our whole is 60 (there are 60 minutes in an hour) and our part is 24 minutes
our percent is x (the value we need to find)
so we can set our proportion like this: 24/60=x/100
first you cross multiply to get: 60x=2400
then you divide by 60 to get: x=40
so 40 is your answer