Answer
Get values for length, width, price
Set the value of length-in-yards to length/3
Set the value of width-in-yards to width/3
Set the value of area to length-in-yards $\times$ width-in-yards
Set the value of cost to area $\times$ price
If cost $\leq$ 500 then
$\ \ \ \ \ \ $ Print the message ‘You can afford this carpet’
Else
$\ \ \ \ \ \ $ Print the message ‘This carpet is too expensive’
Stop
Work Step by Step
Get values for length, width, price
Set the value of length-in-yards to length/3
Set the value of width-in-yards to width/3
Set the value of area to length-in-yards $\times$ width-in-yards
Set the value of cost to area $\times$ price
If cost $\leq$ 500 then
$\ \ \ \ \ \ $ Print the message ‘You can afford this carpet’
Else
$\ \ \ \ \ \ $ Print the message ‘This carpet is too expensive’
Stop
