B Set 70 Unknown

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                "subType": "read-time",
                "question": "What time is shown on the clock? [12 o'clock]",
                "answer": "12:00",
                "correctAnswer": "12:00",
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                "id": 2,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 1:00 to 2:00?",
                "answer": 60,
                "correctAnswer": "60",
                "difficulty": "starter"
            },
            {
                "id": 3,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [hour hand near 12, minute hand at 30 minutes]",
                "answer": "12:30",
                "correctAnswer": "12:30",
                "difficulty": "starter"
            },
            {
                "id": 4,
                "type": "clock-math",
                "subType": "add-time",
                "question": "60 minutes after 10:00 = ?",
                "answer": "11:00",
                "correctAnswer": "11:00",
                "difficulty": "starter"
            },
            {
                "id": 5,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "60 minutes before 3:00 = ?",
                "answer": "2:00",
                "correctAnswer": "2:00",
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                "id": 6,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "60 minutes before 3:30 = ?",
                "answer": "2:30",
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            },
            {
                "id": 7,
                "type": "clock-math",
                "subType": "add-time",
                "question": "60 minutes after 5:00 = ?",
                "answer": "6:00",
                "correctAnswer": "6:00",
                "difficulty": "starter"
            },
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                "id": 8,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [6 o'clock]",
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                "correctAnswer": "6:00",
                "difficulty": "starter"
            },
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                "id": 9,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 11:00 to 11:30?",
                "answer": 30,
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                "id": 10,
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                "subType": "add-time",
                "question": "30 minutes after 6:30 = ?",
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                "correctAnswer": "7:00",
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                "id": 11,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 10:30 to 12:00?",
                "answer": 90,
                "correctAnswer": "90",
                "difficulty": "starter"
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                "id": 12,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "60 minutes before 2:30 = ?",
                "answer": "1:30",
                "correctAnswer": "1:30",
                "difficulty": "starter"
            },
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                "id": 13,
                "type": "clock-math",
                "subType": "read-time",
                "question": "What time is shown on the clock? [10 o'clock]",
                "answer": "10:00",
                "correctAnswer": "10:00",
                "difficulty": "starter"
            },
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                "id": 14,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "30 minutes before 8:00 = ?",
                "answer": "7:30",
                "correctAnswer": "7:30",
                "difficulty": "starter"
            },
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                "id": 15,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 7:30 to 8:00?",
                "answer": 30,
                "correctAnswer": "30",
                "difficulty": "starter"
            },
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                "id": 16,
                "type": "clock-math",
                "subType": "subtract-time",
                "question": "30 minutes before 8:30 = ?",
                "answer": "8:00",
                "correctAnswer": "8:00",
                "difficulty": "starter"
            },
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                "id": 17,
                "type": "clock-math",
                "subType": "add-time",
                "question": "90 minutes after 11:00 = ?",
                "answer": "12:30",
                "correctAnswer": "12:30",
                "difficulty": "starter"
            },
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                "id": 18,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 10:30 to 11:00?",
                "answer": 30,
                "correctAnswer": "30",
                "difficulty": "starter"
            },
            {
                "id": 19,
                "type": "clock-math",
                "subType": "add-time",
                "question": "30 minutes after 4:30 = ?",
                "answer": "5:00",
                "correctAnswer": "5:00",
                "difficulty": "starter"
            },
            {
                "id": 20,
                "type": "clock-math",
                "subType": "elapsed-time",
                "question": "How many minutes from 2:30 to 3:30?",
                "answer": 60,
                "correctAnswer": "60",
                "difficulty": "starter"
            }
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