All A are B.
One-third of all D are A.
Half of all C are B.
One C is a A.
Eight C are D.
There are 90 B.
Draw the Venn diagram. How many B are neither A nor C?
I am not convinced that there is enough into to sove this.
Here is a Venn diagram outline. This is how I see the basic problem.
I will continue to think about it.
This is an original question.
All DERFs are ENAJs. One-third of all ENAJs are DERFs. Half of all SIVADs are ENAJs. One SIVAD is a DERF. Eight SIVADs are ENAJs. There are 90 ENAJs. Draw the Venn diagram. How many ENAJs are neither DERFs nor SIVADs?