A shopkeeper sold some articles @ 35 per article and earned a profit of 40%. At what price each article should have been sold so that 60% profit was earned?  Choices
A) 25
B) 29
C) 30
D) 40
E) 45
SP = 140% of CP; :. CP = 35 × 100/140 = 25   Then, 60% of CP = 2.5 × 6 = 15   To set a profit of 60% the SP = 25 + 15= 
<gadget id="calculator">25 + 15</gadget>
<output>40</output>
40.   Option '40'
<result>D</result>
A shopkeeper sold some articles @ 35 per article and earned a profit of 40%. At what price each article should have been sold so that 60% profit was earned?