Question

Postage of a magazine that weighs 85 g

Answer 1

$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