Clock Math Quarter Hour Hard — Set 84

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            "difficulty": "hard",
            "clockMode": "quarter-hour",
            "maxNumber": 10
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        "problems": [
            {
                "id": 1,
                "type": "clock-math",
                "subType": "add-time",
                "question": "58 minutes after 3:26 = ?",
                "answer": "4:24",
                "correctAnswer": "4:24",
                "difficulty": "hard"
            },
            {
                "id": 2,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 6:49 to 7:51?",
                "answer": 62,
                "correctAnswer": "62",
                "difficulty": "hard"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 6:39 to 8:02?",
                "answer": 83,
                "correctAnswer": "83",
                "difficulty": "hard"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:57 to 12:33?",
                "answer": 36,
                "correctAnswer": "36",
                "difficulty": "hard"
            },
            {
                "id": 5,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "42 minutes before 2:45 = ?",
                "answer": "2:03",
                "correctAnswer": "2:03",
                "difficulty": "hard"
            },
            {
                "id": 6,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:03 to 3:02?",
                "answer": 119,
                "correctAnswer": "119",
                "difficulty": "hard"
            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 8:42 to 8:48?",
                "answer": 6,
                "correctAnswer": "6",
                "difficulty": "hard"
            },
            {
                "id": 8,
                "type": "clock-math",
                "subType": "add-time",
                "question": "33 minutes after 2:28 = ?",
                "answer": "3:01",
                "correctAnswer": "3:01",
                "difficulty": "hard"
            },
            {
                "id": 9,
                "type": "clock-math",
                "subType": "add-time",
                "question": "8 minutes after 4:09 = ?",
                "answer": "4:17",
                "correctAnswer": "4:17",
                "difficulty": "hard"
            },
            {
                "id": 10,
                "type": "clock-math",
                "subType": "add-time",
                "question": "75 minutes after 3:30 = ?",
                "answer": "4:45",
                "correctAnswer": "4:45",
                "difficulty": "hard"
            },
            {
                "id": 11,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 1, minute hand at 6 minutes]",
                "answer": "1:06",
                "correctAnswer": "1:06",
                "difficulty": "hard"
            },
            {
                "id": 12,
                "type": "clock-math",
                "subType": "add-time",
                "question": "13 minutes after 5:38 = ?",
                "answer": "5:51",
                "correctAnswer": "5:51",
                "difficulty": "hard"
            },
            {
                "id": 13,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "20 minutes before 4:56 = ?",
                "answer": "4:36",
                "correctAnswer": "4:36",
                "difficulty": "hard"
            },
            {
                "id": 14,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "17 minutes before 6:50 = ?",
                "answer": "6:33",
                "correctAnswer": "6:33",
                "difficulty": "hard"
            },
            {
                "id": 15,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:19 to 3:03?",
                "answer": 104,
                "correctAnswer": "104",
                "difficulty": "hard"
            },
            {
                "id": 16,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 7, minute hand at 15 minutes]",
                "answer": "7:15",
                "correctAnswer": "7:15",
                "difficulty": "hard"
            },
            {
                "id": 17,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 12, minute hand at 11 minutes]",
                "answer": "12:11",
                "correctAnswer": "12:11",
                "difficulty": "hard"
            },
            {
                "id": 18,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 8:07 to 10:00?",
                "answer": 113,
                "correctAnswer": "113",
                "difficulty": "hard"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "30 minutes before 11:49 = ?",
                "answer": "11:19",
                "correctAnswer": "11:19",
                "difficulty": "hard"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "add-time",
                "question": "49 minutes after 9:34 = ?",
                "answer": "10:23",
                "correctAnswer": "10:23",
                "difficulty": "hard"
            }
        ],
        "layout": {
            "columns": 2,
            "problemsPerPage": 20
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