The HCF of \( \frac{9}{10} \), \( \frac{3}{25} \), \( \frac{6}{15} \) and \( \frac{12}{5} \) is:
\( \frac{1}{150} \)
\( \frac{1}{50} \)
\( \frac{9}{50} \)
\( \frac{3}{70} \)
Atulit has 100 apples. He gave 10% of the apples to Arnav, 15% of the apples to Keshav and \( \frac{2}{5} \) th of the apples to Rinku. How many apples are left with Atulit after distribution?
If x = \( \frac{y}{2} \) and y = \( \frac{z}{6} \), then x : y : z is equal to: