Five kg of butter was bought by a shopkeeper for 300. One kg becomes unsaleable. He sells the remaining in such a way that on the whole he incurs a loss of 10%. At what price per kg was the butter sold?
Select: A) 67.5 B) 52.5 C) 60 D) 72.5 E) None of these
Let S.P. = x per kg   ∴ S.P. of 4 kg = 4x   ∴ 4x = 100−40/100×300   ⇒ x = 270⁄4 = 67.50   67.5nswer 67.5
<result>A</result>
Five kg of butter was bought by a shopkeeper for 300. One kg becomes unsaleable. He sells the remaining in such a way that on the whole he incurs a loss of 10%. At what price per kg was the butter sold?