With bladder stones, the most common type is a uric acid stone. Less common types of bladder stones include calcium oxalate, calcium phosphate, ammonium urate, cysteine, or magnesium ammonium phosphate stones.
Average Lunch Lady Salaries. The average salary for lunch lady jobs is $17,000. Average lunch lady salaries can vary greatly due to company, location, industry, experience and benefits. This salary was calculated using the average salary for all jobs with the term lunch lady anywhere in the job listing.
Income and Qualifications. Most waitresses are paid by the hour and earn tips on top of their hourly wages. Average tips for a waitress are 15 to 20 percent of the total bill, according to iTipping.com. Therefore, a waitress that rings up $400 during a four-hour shift should make $60 to $80 in tips. Average hourly rates for waitresses were $9.95 as of May 2012, according to the U.S Bureau of Labor Statistics -- or $20,710 per year. This equates to $1,725.83 per month.