Question 1080752

 if {{{y}}} varies {{{inversely}}} as {{{x}}}, we have

{{{y=k/x}}} 

If {{{y = 40}}} when {{{x = 5}}}​,we can find {{{k}}}:

{{{40=k/5}}}

{{{40*5=k}}}

{{{k=200}}}


so,  {{{y}}} when {{{x = 20 }}} will be:

{{{y=200/20}}} 

{{{y=10}}}