Answer
15
Work Step by Step
When looking at the original fraction, $\frac{24 \times 15}{8 \times 3}$, we can see that there's actually no need to multiply 24 by 15 and 8 by 3. Rather, we can reduce between the numerator and denominator. We can actually think of this fraction as two different fractions:
$\frac{24}{8}$ $\times$ $\frac{15}{3}$
Now, we can reduce each fraction individually.
$\frac{24}{8}$ = 24 $\div$ 8 = 3
$\frac{15}{3}$ = 15 $\div$ 3 = 5
We can now multiply these two answers together.
3 x 5 = 15