Question

In 2008, 565,650 americans died of (all forms of) cancer. assuming a population of 305 million, what was the mortality rate in units of death per 100,000 units

Answer 1

There were 565,650 deaths in a population of 305 million.

Note that
305 million =\ 305 x 10⁶
100,000 = 10⁵

By proportion, the deaths per 100,000 is
$\frac{10^{5}}{305 \times 10^{6}} (565,650) = 185.46$

Answer: 185 per 100,000 units