C is number of families with cats = 38
D is number of families with Dogs
60 = C + D - Both + None
since both & none are same - we can negate them.
60 = C + D
D = 22
Answer is B.
However if we need to find families with Dogs only then answer is C
D is number of families with Dogs
60 = C + D - Both + None
since both & none are same - we can negate them.
60 = C + D
D = 22
Answer is B.
However if we need to find families with Dogs only then answer is C
