[{"id": 1, "type": "multiple_choice", "options": ["30 square units", "20 square units", "12 square units", "24 square units"], "question": "What is the area of a rectangle with length 10 and width 2?", "correct_answer": "20 square units"}, {"id": 2, "type": "short_answer", "question": "What is 90% of 160?", "correct_answer": "144"}, {"id": 3, "type": "multiple_choice", "options": ["12:9", "4:9", "12:3", "7:6"], "question": "If the ratio is 4:3, what is the equivalent ratio when multiplied by 3?", "correct_answer": "12:9"}, {"id": 4, "type": "short_answer", "question": "What is 60% of 180?", "correct_answer": "108"}, {"id": 5, "type": "multiple_choice", "options": ["28 square units", "49 square units", "56 square units", "14 square units"], "question": "What is the area of a rectangle with length 7 and width 7?", "correct_answer": "49 square units"}, {"id": 6, "type": "short_answer", "question": "What is 30% of 100?", "correct_answer": "30"}, {"id": 7, "type": "short_answer", "question": "What is 40% of 20?", "correct_answer": "8"}, {"id": 8, "type": "multiple_choice", "options": ["6:24", "24:24", "24:6", "10:10"], "question": "If the ratio is 6:6, what is the equivalent ratio when multiplied by 4?", "correct_answer": "24:24"}]