I need big brain help frfr plz xd helps

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 (%)

Write and solve a real word problem that involves determining distance on a coordinate plane

East black horse $0.25 total budget is $555 it'll cost $115 for other supplies about how many flyers do you think we can buy