SOLUTION: i bought apples and bananas at the store in a ratio of 3 apples to 4 bananas. If I bought 18 apples then how many bananas did i buy?

How many groups of 3 apples do you have then ?  -- But of course,   = 6 groups.


Hence, you have 6 groups of 4 bananas each.



From this point, there is only one step to the answer, and I leave this step to you.




    Or, you can use this proportion

         = .

    From the proportion, you momentarily get  x =  = 4*6 bananas.