A store sells two kinds of birdseed. If brand a is 40% millet and 60% sunflower and brand b is 65% millet and 35% sunflower . A customers purchases a mix of the two types that is 50% millet. What percent is brand A Choose the most appropriate option:	A) 30	B) 40	C) 50	D) 60	E) 70
Let "a" and "b" be the amount of brand A and brand B respectively in the mixture.   Total amount of the mixture = a+b   Amount of millet in the mixture = 40% of a + 65 % b . This is also equal to 50% of the mixture as per the question i.e (a+b)/2   .4 a + .65 b = (a+b)/2 =&gt; .8a +1.3 b = a+b =&gt; .3b =.2 a =&gt; b =(2/3)a   We have to find the percent of brand A in the total mixture i.e (a/(a+b)) * 100 = (a/(a+(2/3)a))*100 = (3/5)*100= 
<gadget id="calculator">(3/5)*100</gadget>
<output>60</output>
60%   ANSWER:60
<result>D</result>
A store sells two kinds of birdseed. If brand a is 40% millet and 60% sunflower and brand b is 65% millet and 35% sunflower . A customers purchases a mix of the two types that is 50% millet. What percent is brand A