Answer:
1 : 2
Step-by-step explanation:
find the total number of bananas/ oranges
sum the parts of the ratio 2 + 3 = 5
divide the total by 5 to find the value of one part of the ratio
[tex]\frac{200}{5}[/tex] = 40 → 1 part of the ratio
2 parts = 2 × 40 = 80 ← number of oranges
3 parts = 3 × 40 = 120 ← number of bananas
After selling 30 oranges, there are 80 - 30 = 50 oranges and
After selling 20 bananas there are 120 - 20 = 100 bananas
ratio of remaining oranges : bananas = 50 : 100 = 1 : 2