Respuesta :
ratio and proportion
nails:rafters=40:5
40/5=96/r
we can simplify left side
8/1=96/r
times both sides by r
8r=96
divide both sides by 8
r=12
12 rafters
nails:rafters=40:5
40/5=96/r
we can simplify left side
8/1=96/r
times both sides by r
8r=96
divide both sides by 8
r=12
12 rafters