Sandy is younger than Molly by 12 years. If the ratio of their ages is 7:9, how old is Sandy?  Pick one:	A) 42	B) 49	C) 56	D) 63	E) 70
Let Sandy's age be 7x and let Molly's age be 9x.   9x - 7x = 12   x = 6   Sandy is 42 years old.   The answer is 42.
<result>A</result>
Sandy is younger than Molly by 12 years. If the ratio of their ages is 7:9, how old is Sandy?