Question

Nina woke up at 8:00 A.M. At noon the temperature had risen 8°F. By 1:00 P.M. The temperature had risen another 4°F. There was a thunderstorm at 4:00 P.M. By 7:00 P.M. The temperature had fallen 11°F since 1:00 P.M. To 62°F. What was the temperature when Nina woke up?

Answer 1

61 °F

Explanation:

If T is the temperature at 8 a.m., we have ...

T +8 +4 -11 = 62

T +1 = 62

T = 61 . . . . . . subtract 1

The temperature was 61 °F when Nina woke up.