https://preparationpoint.info/solved-past-papers-mcqs/ppsc-past-papers/ppsc-past-papers-2018/model-paper-85-assistant-director-bs-17-2018-in-local-government-community-development-department/if-the-wages-of-6-men-for-15-days-are-2100-then-find-wages-if-9-men-for-12-days/