Gce Model Questions Vol1 2019 Civic Education Question 9

A community's tension level is measured on a scale from 0 to 100, with an initial value of 80. Three peace‑building interventions can be applied:\n- Dialogue reduces tension by \(30\%\);\n- Economic development reduces tension by \(20\%\);\n- Joint community projects reduce tension by \(25\%\).\nWhen an intervention is applied after another, its effectiveness is reduced by \(10\%\) of its original reduction for the second intervention and by \(20\%\) of its original reduction for the third intervention. Determine the order of applying the three interventions that yields the lowest final tension level and compute that final tension (rounded to one decimal place). Give your answer as the three interventions in order (use the words Dialogue, Economic, Joint) followed by the final tension, separated by a semicolon.