9:18 = 1:2
There are 1 to 2 females to males
X= c/3a - b/3a if I’m right.
For this case we are asked the following question:
"What is the volume of the rubick's cube whose edge measures 3 cm"
By definition, the volume of a cube is given by:

Where:
l: Is the side or the edge of the cube
According to the statement we have:

Substituting:

Finally, the volume of the cube is 
Answer:

Answer:
To find the number of apples per basket we divide 90 by 6 to get 15. We know that he buys 15 apples. We now have to divide by 3 to get the number of apples per pie, because we know he used all 15 apples. The answer is 15/3 or 5 apples per pie. 5 apples