A merchant has 100 lbs of sugar, part of which he sells at 7% profit and the rest at 17% profit. He gains 10 % on the whole. Find how much is sold at 7% profit?  Pick
A) 70 lbs	B) 40 lbs	C) 30 lbs	D) 50 lbs	E) 60 lbs
100(x)(7/100)+(100(1-x)) (17/100)=100(10/100)   7x+17-17x=10   -10 x=-7   x=7/10   100lbs x (7/10) = 70 lbs   70 lbsNSWER:70 lbs
<result>A</result>
A merchant has 100 lbs of sugar, part of which he sells at 7% profit and the rest at 17% profit. He gains 10 % on the whole. Find how much is sold at 7% profit?