A survey shows that 7 out of 8 customers are satisfied with the food served at Big Joe BBQ. Assuming the restaurant had 176 customers yesterday, how many customers probably left unsatisfied?

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 (%)