## Basic College Mathematics (10th Edition)

Correct: $\frac{7\ refreshers}{10\ students} = \frac{x\ refreshers}{2950\ students}$ $10x = 2950\times7$ $\frac{10x}{10} = \frac{20650}{10}$ $x = 2065$ Incorrect: $\frac{7}{10} = \frac{2950}{x}$ $7x = 2950\times10$ $\frac{7x}{7} = \frac{29500}{7}$ $x = 4214$