Question

A camera company routinely ships cameras that have 4 defective cameras for every 800 shipped. Bradley works at a photo shop that sells the cameras to consumers. If Bradley sells 200 cameras, how many can Bradley expect to be defective?

Answer 1

From the information in the problem, the ratio of defective cameras to cameras shipped is $\frac{4}{800}$. Reducing this ratio, we get the simplified form of

$\frac{4}{800}\div \frac{4}{4}= \frac{1}{200}$

which, incidentally, gives us our answer. We have 1 defective camera for every 200 cameras shipped.