If x + y = 75 and sin x : sin y = \(\frac{1}{\sqrt{2}}\) :\( \frac{1}{2} \), then x : y is:
3 : 1
2 : 3
1 : 3
3 : 2
D. 3 : 2
The LCM of \( \frac{3}{2} \),\( \frac{4}{6} \), \( \frac{5}{8} \) and \( \frac{6}{10} \) is:
60
30
\( \frac{1}{60} \)
\( \frac{1}{30} \)
B. 30