Question 975946
The mass of a substance varies directly with the volume of the substance.
 The volume of 100 kilograms of substance is 80 liters.
 What is the volume, in liters, of 3.2 kilograms of this substance?
:
Use a ratio equation, let x = amt in liters of 3.2 kg
{{{x/80}}} = {{{3.2/100}}}
Cross multiply
100x = 3.2 * 80
100x = 256
x = 256/100
x = 2.56 liters