HELP!!! THIS IS IMPORTANT , aflred runs 2 1/2 miles in 3/4 of an hour.

Which unit rates are true for this situation?

3/10 miles per hour

3/10 to run a mile

3 1/3 miles per hour

3 1/3 hours to run a mile

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 (%)