feet and inches

[citylights05]

hey got another question for u guys...

if 3"=100' then how many inches equal 10'

i cant figure it out.. im doin a project with designing buildings and stuff.. please help

 

[ChaoticLlama]

Welcome to the wonderful world of ratios!

think of it more this way

organize your known values on the left side of the equation and the incomplete ratio on the right.

3"/100' = X"/10'

The blue ratio are the values that are given to you, and the red values are the incomplete ones. X is the value you was to find.