If a: b = 17: 5, b: c = 13: 11, find a: b: c? Choose the correct choice from the following answers:	A) 21: 65: 55	B) 121: 65: 55	C) 221: 65: 55	D) 221: 75: 55	E) 221: 65: 45
a: b = 17: 5   b: c = 13: 11   a: b: c = 221: 65: 55   ANSWER:221: 65: 55
<result>C</result>
If a: b = 17: 5, b: c = 13: 11, find a: b: c?