i feel loved for once after 13 years of my life i finally feel loved by someone but i have come to conclusion that my family will never love me i mean there the ones who called me unlovable and beat me for the smallest mistakes

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 (%)