There are 4 numbers W, X, Y, and Z. If W:X = 4/5, X:Y = 5/6, Y:Z = 6/7, then W:Z will be? Choices:
A) 4 : 5  B) 2 : 3  C) 4 : 7  D) 1 : 2  E) 5 : 7
Solution   W : X = 4 : 5, X : Y = 5 : 6, Y : Z = 6 : 7   âˆ´Wâˆ¶Xâˆ¶Yâˆ¶Z= 4 : 5 : 6 : 7.   Thus, W : Z = 4 : 7   4 : 7orrect Option 4 : 7
<result>C</result>
There are 4 numbers W, X, Y, and Z. If W:X = 4/5, X:Y = 5/6, Y:Z = 6/7, then W:Z will be?