The prices of tea and coffee per kg were the same in june. In july the price of coffee shot up by 10% and that of tea dropped by 20%. if in july , a mixture containing equal quantities of tea and coffee costs 50/kg. how much did a kg of coffee cost in june ?  Pick:
A) 50	B) 45	C) 52.63	D) 40	E) 35
Let the price of tea and coffee be x per kg in June.   Price of tea in July = 1.1x   Price of coffee in July = 0.8x .   In July the price of 1/2 kg (500gm) of tea and 1/2 kg (500gm) of coffee (equal quantities) = 50   1.1x(1/2) + 0.8x(1/2) = 50   =&gt; x =52.63   52.63
<result>C</result>
The prices of tea and coffee per kg were the same in june. In july the price of coffee shot up by 10% and that of tea dropped by 20%. if in july , a mixture containing equal quantities of tea and coffee costs 50/kg. how much did a kg of coffee cost in june ?