Answer:
23.3%
Explanation:
Wow, that's definitely a confusing way to teach it. Let me help you understand it:
7 is what percent of 30? This is:
7 / 30 or
![(7)/(30)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j1g03j0irrc3jonlb8bt496i6trmeonlsd.png)
We are going to do cross multiplication to find the missing value, X.
![(x)/(100) =(7)/(30)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4rktzb2jdsbrvbt7rsx7m0zln6fwmnfqdf.png)
30 * X = 100 * 7
30X = 700
X =
![(700)/(30)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/en9f4h57e904urtkoqmyr0wtoh6o4zievp.png)
X = 23.3 % is the missing value