Neco 2020 Agricultural Science Question 33

An extension officer wants to promote integrated pest management (IPM) to 200 smallholder farmers. Three communication activities are available:\n\n- Radio broadcast: cost N150,000, reaches 80 % of farmers, adoption effectiveness 60 %.\n- Demonstration plot: cost N250,000, reaches 30 % of farmers, adoption effectiveness 85 %.\n- Printed pamphlet: cost N100,000, reaches 70 % of farmers, adoption effectiveness 40 %.\n\nThe total budget cannot exceed N400,000. Assuming the expected number of adopters from an activity equals (reach % × effectiveness % × 200), which combination of activities maximises the expected number of adopters? State the chosen activities and the expected number of adopters.