A shopkeeper sells 400 metres of cloth for $18000 at a loss of Rs.5 per metre. Find his cost price for one metre of cloth? Choose the correct choice from the following answers.
A) $20
B) $43
C) $50
D) $70
E) $40
$50   $50   SP per metre = 18000/400= 
<gadget id="calculator">18000/400</gadget>
<output>45</output>
$45 Loss per metre= $5 $50P per metre = 45 + 5= 
<gadget id="calculator">45 + 5</gadget>
<output>50</output>
$50
<result>C</result>
A shopkeeper sells 400 metres of cloth for $18000 at a loss of Rs.5 per metre. Find his cost price for one metre of cloth?