1.

If 2.5x = 0.02y, then the value of \(\frac{{{\rm{y}} - {\rm{x}}}}{{{\rm{y\;}} + {\rm{\;x}}}}\) is:

A. 62/63
B. 62/6.3
C. 620/63
D. 62/630
Answer» B. 62/6.3


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