Å container of height 30cm has a capacity of 1.5 litres. What is the capacity of a similar container of height 3.0cm​

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 (%)