If Q:R = 6:7 and R:S = 8:9 then Q:R:S is  Choose the most appropriate option.
A) 48:56:68	B) 48:56:66	C) 48:56:63	D) 44:52:63	E) 48:50:63
Solution:   Q/R = 6/7;   R/S = 8/9;   Q:R:S = 6*8:7*8:7*9 = 48:56:63.   Answer: Option 48:56:63
<result>C</result>
If Q:R = 6:7 and R:S = 8:9 then Q:R:S is