What is the value of y = √25 + √100 − √600 ÷ √6?

From the previous step, we were calculating $\sqrt{600} \div \sqrt{6}$.

$$\sqrt{600} \div \sqrt{6} = \sqrt{\frac{600}{6}}$$ $$\sqrt{\frac{600}{6}} = \sqrt{100}$$ $$\sqrt{100} = 10$$

The expression is $y = \sqrt{25} + \sqrt{100} - \sqrt{600} \div \sqrt{6}$.
We found:
$\sqrt{25} = 5$
$\sqrt{100} = 10$
$\sqrt{600} \div \sqrt{6} = 10$

Substitute these values:

$$y = 5 + 10 - 10$$

$$y = 15 - 10$$ $$y = 5$$