The cost per pound of milk powder and coffee were the same in June. In July, the price of coffee shot up by 300% and that of milk powder dropped by 80%. If in July, a mixture containing equal quantities of milk powder and coffee costs $6.30 for 3lbs, how much did a pound of milk powder cost in July?	Choose the most appropriate option:
A) $4
B) $0.2
C) $1
D) $3
E) $1.65
Lets assume price of Coffee in June =100x   Price of milk powder in June =100x   Price of Coffee in July = 400x (because of 300% increase in price)   Price of milk powder in July = 20x (because of 80% Decrease in price)   Price of 1.5 pound of Coffee 1.5 pound of milk powder in July will be = 600x + 30x = 630x   As per question   630x600  + 30= 
<gadget id="calculator">600  + 30</gadget>
<output>630</output>
630x   As per question   630x= 6.30$   x = 0.01S   So the Price of milk powder in July = 20x = 20 x 0.01 = 0.2$/pound   Answer $0.2
<result>B</result>
The cost per pound of milk powder and coffee were the same in June. In July, the price of coffee shot up by 300% and that of milk powder dropped by 80%. If in July, a mixture containing equal quantities of milk powder and coffee costs $6.30 for 3lbs, how much did a pound of milk powder cost in July?