The increase in price was 10%
2.5*.1=.25
2.5+.25=2.75
hope this helps
The answer is : 1:6 repeating
The time needed to run the second half of the race is 8.44 s
Step-by-step explanation:
The total distance covered by the athlete during the race is
d = 200 m
And the total time taken to cover this distance is
T = 19.19 s
We also know that the time the athlete needs to cover the first half of the race is

Also, we know that

where
is the time the athlete takes to cover the second half of the race.
Re-arranging this equation and susbtituting the values, we find the value of t2:

Learn more about uniform motion:
brainly.com/question/8893949
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The answer is B I have provided a picture to show the solving steps