# Frigid Forecast

Monday: +7°F
Tuesday: +22°F
Wednesday: +2°F
Thursday: -5°F
Friday: -4°F
Saturday: +1°F

## Explanation

1. Tuesday was the warmest day of the week, but still was only 10 degrees below freezing.
Freezing is 32° Fahrenheit.
32°F − 10°F = 22° F
Tuesday's temperature was 22° F.

That was 15°F warmer than the day before.
Tuesday was 15°F warmer than Monday.
Monday's temperature + 15°F = Tuesday's temperature.
Subtract 15°F from Tuesday's temperature to find the warmer temperature for Monday:
22°F − 15°F = +7°F
Monday's temperature was +7°F.

2. On Wednesday the temperature was 5°F colder than on Monday.
Wednesday was +2°F.
3. Thursday was even 1°F colder than Friday.
Skip this clue now and find out Friday's temperature.
4. Friday's temperature was 6°F below Wednesday's.
Wednesday's temperature was +2°F.
Subtract: +2°F − 6°F = -4°F
5. Now go back to find Thursday's temperature:
Friday's temperature was 4°F.
Thursday was 1°F colder than Friday.
So, subtract:
-4°F − 1°F = -5°F
Thursday's temperature was -5°F.
6. It was 5°F warmer on Saturday than on Friday.