medium Set 98 Form Exercise

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                "problemCount": 19,
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    "subject": "clock-math",
    "difficulty": "medium",
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    "problems": [
        {
            "id": 1,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "60 minutes before 12:55 = ?",
            "answer": "11:55",
            "correctAnswer": "11:55",
            "difficulty": "normal"
        },
        {
            "id": 2,
            "type": "clock-math",
            "subType": "add-time",
            "question": "35 minutes after 9:00 = ?",
            "answer": "9:35",
            "correctAnswer": "9:35",
            "difficulty": "normal"
        },
        {
            "id": 3,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "55 minutes before 10:45 = ?",
            "answer": "9:50",
            "correctAnswer": "9:50",
            "difficulty": "normal"
        },
        {
            "id": 4,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 8:30 to 9:15?",
            "answer": 45,
            "correctAnswer": "45",
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            "id": 5,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "50 minutes before 7:15 = ?",
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        },
        {
            "id": 6,
            "type": "clock-math",
            "subType": "read-time",
            "question": "What time is shown on the clock? [hour hand near 10, minute hand at 20 minutes]",
            "answer": "10:20",
            "correctAnswer": "10:20",
            "difficulty": "normal"
        },
        {
            "id": 7,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "55 minutes before 11:30 = ?",
            "answer": "10:35",
            "correctAnswer": "10:35",
            "difficulty": "normal"
        },
        {
            "id": 8,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "25 minutes before 6:10 = ?",
            "answer": "5:45",
            "correctAnswer": "5:45",
            "difficulty": "normal"
        },
        {
            "id": 9,
            "type": "clock-math",
            "subType": "add-time",
            "question": "50 minutes after 8:25 = ?",
            "answer": "9:15",
            "correctAnswer": "9:15",
            "difficulty": "normal"
        },
        {
            "id": 10,
            "type": "clock-math",
            "subType": "read-time",
            "question": "What time is shown on the clock? [hour hand near 7, minute hand at 10 minutes]",
            "answer": "7:10",
            "correctAnswer": "7:10",
            "difficulty": "normal"
        },
        {
            "id": 11,
            "type": "clock-math",
            "subType": "read-time",
            "question": "What time is shown on the clock? [hour hand near 4, minute hand at 5 minutes]",
            "answer": "4:05",
            "correctAnswer": "4:05",
            "difficulty": "normal"
        },
        {
            "id": 13,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 2:05 to 4:05?",
            "answer": 120,
            "correctAnswer": "120",
            "difficulty": "normal"
        },
        {
            "id": 14,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 2:20 to 2:30?",
            "answer": 10,
            "correctAnswer": "10",
            "difficulty": "normal"
        },
        {
            "id": 15,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 7:00 to 7:15?",
            "answer": 15,
            "correctAnswer": "15",
            "difficulty": "normal"
        },
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            "id": 16,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "5 minutes before 6:25 = ?",
            "answer": "6:20",
            "correctAnswer": "6:20",
            "difficulty": "normal"
        },
        {
            "id": 17,
            "type": "clock-math",
            "subType": "add-time",
            "question": "75 minutes after 9:10 = ?",
            "answer": "10:25",
            "correctAnswer": "10:25",
            "difficulty": "normal"
        },
        {
            "id": 18,
            "type": "clock-math",
            "subType": "add-time",
            "question": "65 minutes after 5:15 = ?",
            "answer": "6:20",
            "correctAnswer": "6:20",
            "difficulty": "normal"
        },
        {
            "id": 19,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 10:10 to 11:00?",
            "answer": 50,
            "correctAnswer": "50",
            "difficulty": "normal"
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            "id": 20,
            "type": "clock-math",
            "subType": "read-time",
            "question": "What time is shown on the clock? [hour hand near 6, minute hand at 15 minutes]",
            "answer": "6:15",
            "correctAnswer": "6:15",
            "difficulty": "normal"
        }
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