Question 139309
{{{x = (Ay)/(Bz) }}}

A ratio of y/z of 8/4 =2 yields an x = 20.

What is x if the ratio of y/z = 4/8 = 1/2??

Use ratios.

{{{ 20/2 = x/(1/2)}}}
{{{ 10 = 2x}}}
{{{ 5 = x }}}