There are 95 girls and 87 boys in year 13 at a school. one girl is going to be chosen for the role of head girl. a different girl is going to be chosen for the role of deputy head girl. one boy is going to be chosen for the role of head boy. a different boy is going to be chosen for the rule of deputy head boy. work out how many different ways this can be done.

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image