A salesman sold twice as much pears in the afternoon than in the morning. If he sold $510 kilograms of pears that day, how many kilograms did he sell in the afternoon?	Pick.
A) 120	B) 180	C) 340	D) 280	E) 320
3x=510   x=170   Therefore, the salesman sold 170kg in the morning and 2⋅170=340 kg in the afternoon. So answer is 340.
<result>C</result>
A salesman sold twice as much pears in the afternoon than in the morning. If he sold $510 kilograms of pears that day, how many kilograms did he sell in the afternoon?