medium Set 13 Form Exercise

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            "question": "What time is shown on the clock? [hour hand near 7, minute hand at 30 minutes]",
            "answer": "7:30",
            "correctAnswer": "7:30",
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            "id": 2,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "20 minutes before 2:00 = ?",
            "answer": "1:40",
            "correctAnswer": "1:40",
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            "question": "40 minutes before 9:15 = ?",
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            "question": "What time is shown on the clock? [hour hand near 4, minute hand at 45 minutes]",
            "answer": "4:45",
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            "id": 5,
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            "question": "60 minutes before 3:10 = ?",
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            "id": 6,
            "type": "clock-math",
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            "question": "What time is shown on the clock? [hour hand near 9, minute hand at 15 minutes]",
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            "correctAnswer": "9:15",
            "difficulty": "normal"
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            "id": 7,
            "type": "clock-math",
            "subType": "add-time",
            "question": "50 minutes after 1:00 = ?",
            "answer": "1:50",
            "correctAnswer": "1:50",
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            "id": 8,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 6:25 to 7:45?",
            "answer": 80,
            "correctAnswer": "80",
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            "id": 9,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 3:20 to 4:50?",
            "answer": 90,
            "correctAnswer": "90",
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        {
            "id": 10,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 5:45 to 6:10?",
            "answer": 25,
            "correctAnswer": "25",
            "difficulty": "normal"
        },
        {
            "id": 11,
            "type": "clock-math",
            "subType": "read-time",
            "question": "What time is shown on the clock? [6 o'clock]",
            "answer": "6:00",
            "correctAnswer": "6:00",
            "difficulty": "normal"
        },
        {
            "id": 12,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "60 minutes before 8:40 = ?",
            "answer": "7:40",
            "correctAnswer": "7:40",
            "difficulty": "normal"
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            "id": 13,
            "type": "clock-math",
            "subType": "subtract-time",
            "question": "15 minutes before 9:10 = ?",
            "answer": "8:55",
            "correctAnswer": "8:55",
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            "id": 14,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 6:10 to 6:45?",
            "answer": 35,
            "correctAnswer": "35",
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            "id": 15,
            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 7:15 to 8:35?",
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            "type": "clock-math",
            "subType": "elapsed-time",
            "question": "How many minutes from 6:30 to 7:40?",
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            "type": "clock-math",
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            "question": "What time is shown on the clock? [hour hand near 2, minute hand at 15 minutes]",
            "answer": "2:15",
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            "type": "clock-math",
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            "question": "What time is shown on the clock? [hour hand near 12, minute hand at 30 minutes]",
            "answer": "12:30",
            "correctAnswer": "12:30",
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            "subType": "subtract-time",
            "question": "25 minutes before 12:40 = ?",
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            "correctAnswer": "12:15",
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            "subType": "subtract-time",
            "question": "30 minutes before 5:15 = ?",
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            "correctAnswer": "4:45",
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