Question

If a spring stretches 0.8 with 20 pounds attached how far will it stretch with 60 pounds attached?

Answer 1

$\bf \begin{array}{ccll} length&lbs\\ \cline{1-2} 0.8&20\\ x&60 \end{array}\implies \cfrac{0.8}{x}=\cfrac{20}{60}\implies \cfrac{0.8}{x}=\cfrac{1}{3}\implies 2.4=x$

Answer 2

2.4 because for it to stretch one pound its .04 so
.04•60=2.4