Answer:
$0.68
Explanation:
So we know that $0.40 equals 50 g
Guess what.. XD We can use a proportion, wow!
$0.40 x
----------- = ---------
50 g 85 g
Cross multiply: 50x=34
divide both sides by 50 and you should get x=34/50 or 17/25 or $0.68
YAY! we are done! :D