Question

at a light bulb factory, 4 out of every 25 light bulbs are defective. how many light bulbs would you expect to be defective out of 350 light bulbs?

Explanation:

Step1: Set up proportion

Let \(x\) be the number of defective bulbs. The proportion is \(\frac{4}{25}=\frac{x}{350}\).

Step2: Cross - multiply

\(25x = 4\times350\).

Step3: Solve for \(x\)

\(x=\frac{4\times350}{25}\).
\(x = 56\).

Answer:

\(56\)