Question 720562
{{{P}}}=pressure in psi (pound per square inch)
{{{W}}}=weight in pounds
{{{A}}}=area in square inches
{{{P}}} varies inversely with {{{A}}} and the constant of variation is {{{W}}}
means {{{P=W/A}}}
 
a) {{{W=120}}} and {{{A=360}}} so {{{P=120/360=1/3}}}
 
b) {{{W=207}}} and {{{P=0.4}}} so {{{0.4=207/A}}}
Solving for {{{A}}} :
{{{0.4=207/A}}} --> {{{0.4*A=207}}} --> {{{A=207/0.4}}} --> {{{A=517.5}}}