Question

In the 1960 Olympics, Wilma Rudolph of the United States won the women's 100 meter run in 11.0 seconds. In 1988, Florence Griffith-Joyner, also of th

United States, won with a time of 10.49 seconds, which is still the fastest women's time to this date. Find the percent of decrease in the winning time.
Round to the nearest tenth.

Answer 1

The percent decrease in the winning time is 4.6%.

Step-by-step explanation:

To find the percent decrease in the winning time, we need to calculate the difference between the two times and then divide it by the original time.

First, let's find the difference in the times:

1988 time - 1960 time = 10.49 s - 11.0 s = 0.51 s

Next, let's calculate the percent decrease:

(0.51 s / 11.0 s) * 100% = 4.6%

Therefore, the percent decrease in the winning time is 4.6%.