Question

Yesterday's afternoon temperature was 21 degrees Fahrenheit. It plunged overnight to -3 degrees Fahrenheit. How many degrees did the temperature change?

A. 3 Degrees
B. 18 Degrees
C. 21 Degrees
D. 24 Degrees

Answer 1

Explanation:

It may help you to think of this situation in this manner:

1. The temperature drops 21 degrees from 21 degrees to zero degrees.

2. The temp. then drops 3 degrees from zero to -3 degrees.

3. The total change (which was a drop) was 21 + 3, or 24, degrees.

Summary: from 21 degrees to -3 degrees is a change of 24 degrees.

More explicitly, that's a drop of 24 degrees.

Answer 2

D. 24 Degrees

21-24=-3