2a 4b Figure 3 Figure 3 shows the triangle OAB with ОЛ 1=2a and OB=4b (a) Find AB in terms of a and b The point P is the midpoint of AB (b) Find OP as a simplified expression in terms of a and b The point Q lies on OP such that OQ: QP 3:1 (c) Find A as a simplified expression in terms of a and b The point R lies on OB such that AQR is a straight line. (d) Find in its simplest form the ratio OR: RB B Diagram NOT accurately drawn

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