Question

The temperature at 6:00 AM was -8. The temperature rose 5 during the day, and then fell 3 by early evening. What was the temperature by early evening?

Answer 1

Let:

T1 = temperature at 6:00 AM

T2 = temperature during the day

T3 = Temperature by early evening

The temperature at 6:00 AM was -8. so:

$T1=-8$

The temperature rise 5 during the day:

$T2=T1+5=-8+5=-3$

and then fell 3 by early evening, therefore:

$T3=T2-3=-3-3=-6$