Please help me on this​

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

How do you find principle and simple interest

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250