Arnold and Danny are two twin brothers that are celebrating their birthday. The product of their ages today is smaller by 5 from the product of their ages a year from today. What is their age today?
Answers:	A) 2.	B) 4.	C) 5.	D) 7.	E) 9.
ad = (a+1) (d+1) -5   0= a+d-4   a+d = 4   a=d (as they are twin brothers)   a=d=2   2. is the answer
<result>A</result>
Arnold and Danny are two twin brothers that are celebrating their birthday. The product of their ages today is smaller by 5 from the product of their ages a year from today. What is their age today?