Lisa earns $8.10 an hour and worked 40 hours. jamie earns $10.80 an hour. how many hours would jamie need to work to equal lisa’s earnings over 40 hours

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

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 (%)