Time Quarter Hour Medium — Set 68

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        "problems": [
            {
                "id": 1,
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                "subType": "subtract-time",
                "question": "18 minutes before 8:48 = ?",
                "answer": "8:30",
                "correctAnswer": "8:30",
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                "id": 2,
                "type": "clock-math",
                "subType": "add-time",
                "question": "3 minutes after 2:16 = ?",
                "answer": "2:19",
                "correctAnswer": "2:19",
                "difficulty": "medium"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "add-time",
                "question": "83 minutes after 9:46 = ?",
                "answer": "11:09",
                "correctAnswer": "11:09",
                "difficulty": "medium"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 3:16 to 3:19?",
                "answer": 3,
                "correctAnswer": "3",
                "difficulty": "medium"
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            {
                "id": 5,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "24 minutes before 7:56 = ?",
                "answer": "7:32",
                "correctAnswer": "7:32",
                "difficulty": "medium"
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            {
                "id": 6,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 9:17 to 11:02?",
                "answer": 105,
                "correctAnswer": "105",
                "difficulty": "medium"
            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 3, minute hand at 33 minutes]",
                "answer": "3:33",
                "correctAnswer": "3:33",
                "difficulty": "medium"
            },
            {
                "id": 8,
                "type": "clock-math",
                "subType": "add-time",
                "question": "73 minutes after 7:30 = ?",
                "answer": "8:43",
                "correctAnswer": "8:43",
                "difficulty": "medium"
            },
            {
                "id": 9,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:04 to 1:38?",
                "answer": 34,
                "correctAnswer": "34",
                "difficulty": "medium"
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            {
                "id": 10,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 10:04 to 10:30?",
                "answer": 26,
                "correctAnswer": "26",
                "difficulty": "medium"
            },
            {
                "id": 11,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 2, minute hand at 26 minutes]",
                "answer": "2:26",
                "correctAnswer": "2:26",
                "difficulty": "medium"
            },
            {
                "id": 12,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 9:33 to 11:20?",
                "answer": 107,
                "correctAnswer": "107",
                "difficulty": "medium"
            },
            {
                "id": 13,
                "type": "clock-math",
                "subType": "add-time",
                "question": "39 minutes after 1:02 = ?",
                "answer": "1:41",
                "correctAnswer": "1:41",
                "difficulty": "medium"
            },
            {
                "id": 14,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "60 minutes before 11:49 = ?",
                "answer": "10:49",
                "correctAnswer": "10:49",
                "difficulty": "medium"
            },
            {
                "id": 15,
                "type": "clock-math",
                "subType": "add-time",
                "question": "6 minutes after 5:18 = ?",
                "answer": "5:24",
                "correctAnswer": "5:24",
                "difficulty": "medium"
            },
            {
                "id": 16,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 5:02 to 5:09?",
                "answer": 7,
                "correctAnswer": "7",
                "difficulty": "medium"
            },
            {
                "id": 17,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "37 minutes before 10:23 = ?",
                "answer": "9:46",
                "correctAnswer": "9:46",
                "difficulty": "medium"
            },
            {
                "id": 18,
                "type": "clock-math",
                "subType": "add-time",
                "question": "31 minutes after 10:23 = ?",
                "answer": "10:54",
                "correctAnswer": "10:54",
                "difficulty": "medium"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 9:00 to 9:52?",
                "answer": 52,
                "correctAnswer": "52",
                "difficulty": "medium"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 9:41 to 11:04?",
                "answer": 83,
                "correctAnswer": "83",
                "difficulty": "medium"
            }
        ],
        "layout": {
            "columns": 2,
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