Question 997676
o = cost of 1 kilo of oranges
a = cost of 1 kilo of apples
b = cost of 1 kilo of bananas


6o = 5a
4a = 3b
2b = 2.4


Combine everything into one:


48o = 40a = 30b = 2.4 * 15 = 36


48o = 36
o = $0.75