ANSWER
3.75 hours
Step-by-step explanation
John spent 12.5 hours at the water park and he estimated that he spent 30% of that time waiting in line.
To find the amount of time he soent waiting in line, we have to simply find 30% of 12.5 hours.
That is:
![(30)/(100)\cdot\text{ 12.5 = 3.75 hours}](https://img.qammunity.org/2023/formulas/mathematics/college/c15zbx7ddfd8qoc03u8i2x57jgwsljyirj.png)
It is reasonable to say that he spent 3.75 hours waiting in line.