Question

39 is 75% of what
what percent of 80 is12

Answer 1

To solve the first question, "39 is 75% of what":

Let \( x \) be the number we want to find. We can set up the equation:

\[
0.75x = 39
\]

Now, divide both sides by 0.75:

\[
x = \frac{39}{0.75} = 52
\]

So, 39 is 75% of **52**.

For the second question, "what percent of 80 is 12":

Let \( y \) be the percentage we want to find. We can set up the equation:

\[
\frac{y}{100} \times 80 = 12
\]

Now, solving for \( y \):

\[
y \times 80 = 1200 \quad (\text{by multiplying both sides by } 100)
\]
\[
y = \frac{1200}{80} = 15
\]

So, **12 is 15% of 80**.