Question

Please awnser 4,5,8 its math btw

Answer 1

4. the amount of O+ donors to the amount of O- donors.
5. the amount of B+ donors to the amount of A- donors. :))

Answer 2

8. Determine the ratio just be dividing 4/3 and then times that by the amount of apples you have 15*1.3 = 20 bananas. Another way to think of it for every 3 apples you have one extra banana so when you have 15 apples you would have 5 extra bananas