Answer:
82%
Explanation:
three years later she could run 800 meters in 2 minutes 44 seconds find the percentage imporvment
in year 8 she ran 800m in 200 seconds (60x3+20)
year 11 she ran 800m in 164 seconds (60x2+44)
164/200 x 100
=82%
18%
200-164/200 x 100=18
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