Answer
The afternoon temperature is 50% greater than the morning temperature.
Work Step by Step
The new number is higher than the original number, so we use the equation for percent increase. The equation for percent increase is the following: $(\frac{new amount - original amount}{original amount})\times100$. Thus, we plug in the numbers to find: $(\frac{57-38}{38})\times100=50$% Using the equation, we find that the temperature did, indeed, increase by 50 percent.
