Question

What is the answer for15/8=80/x

Answer 1

$\frac{15}{8} = \frac{80}{x}$
At this point in time, you can use a technique called cross-mutiplication, where you say that $15*80=8x$, and $1200=8x$ at this point in time, you can devide each side by 8 and solve

Answer 2

15/8=80/x - You need to cross multiply!!

so... 15x=460
and then... X=42.7