Time Telling Time Quarter — Set 86

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        "problems": [
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                "id": 1,
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                "subType": "subtract-time",
                "question": "55 minutes before 7:55 = ?",
                "answer": "7:00",
                "correctAnswer": "7:00",
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                "id": 2,
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                "question": "45 minutes before 2:00 = ?",
                "answer": "1:15",
                "correctAnswer": "1:15",
                "difficulty": "normal"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 4:25 to 4:35?",
                "answer": 10,
                "correctAnswer": "10",
                "difficulty": "normal"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "add-time",
                "question": "75 minutes after 8:35 = ?",
                "answer": "9:50",
                "correctAnswer": "9:50",
                "difficulty": "normal"
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            {
                "id": 5,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 5, minute hand at 30 minutes]",
                "answer": "5:30",
                "correctAnswer": "5:30",
                "difficulty": "normal"
            },
            {
                "id": 6,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 2, minute hand at 35 minutes]",
                "answer": "2:35",
                "correctAnswer": "2:35",
                "difficulty": "normal"
            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 7:05 to 7:40?",
                "answer": 35,
                "correctAnswer": "35",
                "difficulty": "normal"
            },
            {
                "id": 8,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "30 minutes before 8:45 = ?",
                "answer": "8:15",
                "correctAnswer": "8:15",
                "difficulty": "normal"
            },
            {
                "id": 9,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "55 minutes before 9:30 = ?",
                "answer": "8:35",
                "correctAnswer": "8:35",
                "difficulty": "normal"
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                "id": 10,
                "type": "clock-math",
                "subType": "add-time",
                "question": "20 minutes after 4:30 = ?",
                "answer": "4:50",
                "correctAnswer": "4:50",
                "difficulty": "normal"
            },
            {
                "id": 11,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "55 minutes before 6:05 = ?",
                "answer": "5:10",
                "correctAnswer": "5:10",
                "difficulty": "normal"
            },
            {
                "id": 12,
                "type": "clock-math",
                "subType": "add-time",
                "question": "55 minutes after 11:50 = ?",
                "answer": "12:45",
                "correctAnswer": "12:45",
                "difficulty": "normal"
            },
            {
                "id": 13,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 2:40 to 3:40?",
                "answer": 60,
                "correctAnswer": "60",
                "difficulty": "normal"
            },
            {
                "id": 14,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "30 minutes before 5:00 = ?",
                "answer": "4:30",
                "correctAnswer": "4:30",
                "difficulty": "normal"
            },
            {
                "id": 15,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 3, minute hand at 30 minutes]",
                "answer": "3:30",
                "correctAnswer": "3:30",
                "difficulty": "normal"
            },
            {
                "id": 16,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "45 minutes before 5:30 = ?",
                "answer": "4:45",
                "correctAnswer": "4:45",
                "difficulty": "normal"
            },
            {
                "id": 17,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 7:25 to 8:45?",
                "answer": 80,
                "correctAnswer": "80",
                "difficulty": "normal"
            },
            {
                "id": 18,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 11, minute hand at 5 minutes]",
                "answer": "11:05",
                "correctAnswer": "11:05",
                "difficulty": "normal"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "add-time",
                "question": "15 minutes after 4:35 = ?",
                "answer": "4:50",
                "correctAnswer": "4:50",
                "difficulty": "normal"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:50 to 1:00?",
                "answer": 70,
                "correctAnswer": "70",
                "difficulty": "normal"
            }
        ],
        "layout": {
            "columns": 2,
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