Question

The temperature was very cold. Then the temperature doubled. Then the

temperature dropped by 5 degrees. Then the temperature increased by 20
degrees. The temperature is now 60 degrees. What was the starting
temperature?
Which representation do you prefer? Why?

Answer 1

22.5

Explanation:

t=temperature

2t-5+20=60

2t-5+5-20+20=60-20+5

2t=45

2t/2=45/2

t=22.5