Answer:
[tex]\dfrac{3}{4}n[/tex]
Step-by-step explanation:
The ratio of bananas to strawberries is 3:4.
That means for every 3 bananas you buy, you buy 4 strawberries.
That also means that for every 4 strawberries you buy, you buy 3 bananas.
The number of bananas you buy is 3/4 of the number of strawberries you buy.
If you buy n strawberries, then the number of bananas you buy is
[tex]\dfrac{3}{4}n[/tex]
