The sum of three numbers is 42. The second is 5 more than the first. The third is 3 less than
twice the first. What are the numbers?
A) 5, 12, 15
C) 10, 15, 17
B) -6, -7,55
D) 6, 7, 12

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 (%)