Time Quarter Hour Medium — Set 60

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        "problems": [
            {
                "id": 1,
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                "subType": "add-time",
                "question": "24 minutes after 10:16 = ?",
                "answer": "10:40",
                "correctAnswer": "10:40",
                "difficulty": "medium"
            },
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                "id": 2,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "55 minutes before 8:29 = ?",
                "answer": "7:34",
                "correctAnswer": "7:34",
                "difficulty": "medium"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:30 to 1:12?",
                "answer": 102,
                "correctAnswer": "102",
                "difficulty": "medium"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "add-time",
                "question": "35 minutes after 7:58 = ?",
                "answer": "8:33",
                "correctAnswer": "8:33",
                "difficulty": "medium"
            },
            {
                "id": 5,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 1, minute hand at 4 minutes]",
                "answer": "1:04",
                "correctAnswer": "1:04",
                "difficulty": "medium"
            },
            {
                "id": 6,
                "type": "clock-math",
                "subType": "add-time",
                "question": "5 minutes after 9:35 = ?",
                "answer": "9:40",
                "correctAnswer": "9:40",
                "difficulty": "medium"
            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:18 to 12:40?",
                "answer": 82,
                "correctAnswer": "82",
                "difficulty": "medium"
            },
            {
                "id": 8,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 3:15 to 3:16?",
                "answer": 1,
                "correctAnswer": "1",
                "difficulty": "medium"
            },
            {
                "id": 9,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "22 minutes before 6:09 = ?",
                "answer": "5:47",
                "correctAnswer": "5:47",
                "difficulty": "medium"
            },
            {
                "id": 10,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "21 minutes before 6:14 = ?",
                "answer": "5:53",
                "correctAnswer": "5:53",
                "difficulty": "medium"
            },
            {
                "id": 11,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 10, minute hand at 5 minutes]",
                "answer": "10:05",
                "correctAnswer": "10:05",
                "difficulty": "medium"
            },
            {
                "id": 12,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "5 minutes before 12:17 = ?",
                "answer": "12:12",
                "correctAnswer": "12:12",
                "difficulty": "medium"
            },
            {
                "id": 13,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "57 minutes before 11:08 = ?",
                "answer": "10:11",
                "correctAnswer": "10:11",
                "difficulty": "medium"
            },
            {
                "id": 14,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "49 minutes before 11:30 = ?",
                "answer": "10:41",
                "correctAnswer": "10:41",
                "difficulty": "medium"
            },
            {
                "id": 15,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:11 to 11:46?",
                "answer": 35,
                "correctAnswer": "35",
                "difficulty": "medium"
            },
            {
                "id": 16,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 4, minute hand at 30 minutes]",
                "answer": "4:30",
                "correctAnswer": "4:30",
                "difficulty": "medium"
            },
            {
                "id": 17,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "60 minutes before 5:32 = ?",
                "answer": "4:32",
                "correctAnswer": "4:32",
                "difficulty": "medium"
            },
            {
                "id": 18,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 3:48 to 4:47?",
                "answer": 59,
                "correctAnswer": "59",
                "difficulty": "medium"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 10, minute hand at 34 minutes]",
                "answer": "10:34",
                "correctAnswer": "10:34",
                "difficulty": "medium"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 3:04 to 4:58?",
                "answer": 114,
                "correctAnswer": "114",
                "difficulty": "medium"
            }
        ],
        "layout": {
            "columns": 2,
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