A bag of durian is (9/5) as heavy as a bag of rambutans. Express the ratio of the mass of rambutans to the mass of durians.
The part that I don't understand in this question is: all the question gives out is the fraction amount. That's the only information there. So how can I express a ratio with only a limited amount of info?
1 answer
rambutans / durians = 1 / (9/5) = 5 / 9