The thermometer indicates the temperature in degree centigrade at 6:00 am. If the temperature increases one degree every 30 minutes. At what time the temperature will reach 20 degrees ?
A- 7:15
B- 7:30
C- 7:45
D- 8:00
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The thermometer indicates the temperature in degree centigrade at 6:00 am. If the temperature increases one degree every 30 minutes. At what time the temperature will reach 20 degrees ?
A- 7:15
B- 7:30
C- 7:45
D- 8:00
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