Question 200819
The weight M of an object on Mars varies directly as its weight E on Earth.
 A person who weighs 95 lbs on Earth weighs 38 lbs on Mars.
 How much would a 100 lb person weight on Mars?
:
Since it just varies directly, we can use a ratio equation.
m = weight on Mars
{{{38/95}}} = {{{m/100}}}
Cross multiply
95m = 38*100
m = {{{3800/95}}}
m = 40 lb on Mars