a dealer buys 4 varieties of rice costing rs. 40,rs.50,rs.60 and rs.70 per kg in the ratio 4:5:3:2 and mixes all the four varieties and sells at 40% profit. What is the selling price per kg of rice?
Choose the correct choice.
A) 72 B) 73 C) 74 D) 75 E) 76
CP = 40*4+50*5+60*3+70*2= 
<gadget id="calculator">40*4+50*5+60*3+70*2</gadget>
<output>730</output>
730   SP= 1.4*730= 
<gadget id="calculator">1.4*730</gadget>
<output>1_022</output>
1022   Total no.of kgs=4+5+3+2= 
<gadget id="calculator">4+5+3+2</gadget>
<output>14</output>
14   SP per kg=1022/14= 
<gadget id="calculator">1022/14</gadget>
<output>73</output>
73   ANSWER:73
<result>B</result>
a dealer buys 4 varieties of rice costing rs. 40,rs.50,rs.60 and rs.70 per kg in the ratio 4:5:3:2 and mixes all the four varieties and sells at 40% profit. What is the selling price per kg of rice?