Maths, Ratio
posted by Justin .
Mrs Rama uses 0.4 liters of water melon juice for every 0.9 liters of apple juice to make a jug of mixed fruit juice.
A) Find the ratio of the amount of watermelon juice to the amount of apple juice.
B) For every 225 ml of apple juice, how much watermelon juice should Mrs Rama use?
C) If Mrs Rama uses 80 ml of watermelon juice, how much apple juice does she need?

apple juice  a
watermelon juice  w
a : w = .4 : .9 = 4 : 9
B) 225/w = 4/9
4w = 9(225)
w = 506.25
C) a/80 = 4/9
9a = 320
a = 35.55..