Write a division number story with an ANWSER of 1/4

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 (%)

Let x = a + bi and y = c + di and z = f + gi. which statements are true?

The sum of the abscissa and the ordinate is six