Problema Solution
how much must a carpenter cut off a 48 inch board if the length must be 40+-0.25 inches?
Answer provided by our tutors
let 'x' represent the amount removed, then we require:
40-0.25 <= 48-x <= 40+0.25
which solves to:
7.75 <= x <= 8.25
the carpenter must saw off between 7.75 and 8.25 inches