A car repair workshop uses large numbers of filters, costing £ 300 each and plugs, costing £ 400 each. The workshop owner allows £30,000 for these parts and needs at least twice as many filters as plugs. There must also be at least 50 filters and 20 plugs.
Questions
A. Write down 4 inequalities that represent the restrictions on the businesswoman B. Draw a graph that shows a region representing possible values of x and y
