How Manu grams of oat flour does Mr. Price need to use? complete the table

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

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 (%)

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?