High school student working part-time as a lifeguard had a gross income of $6596 last year. if his federal tax rate was 10% and his state tax rate was 4.15%, what was the amount withheld from his pay last year in federal tax, state tax, and fica combined?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)