Five people can finish painting a wall in 5 hours if only 2 people are available how many hours do they have to work to finish the same job with solution please
and what type of proportion
thank you very much​

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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 (%)

How many solutions does the nonlinear system of equations graphed below have?