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Running
Around
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Strategies and Hints
Each track is to be 440 yards, so the following equations can be written
and solved. For the inner track:
15 + y + 10 + y + 10 + y + 10 + y + 10 +
y + 10 + y + 15 + 50 = 440
6y + 130 = 440
6y = 310
y = 51
yd
For the outer track:
15 + 15 + y + 15 + x + 10 + x + 10 + x +
10 + x + 10 + x
+ 10 + x + 10 + x + 10 + x + 15 + y + 15
+ 15 + 70 = 440
2y + 8x + 230 = 440
y
+ 4x = 105
But,
y = 51,
so
51
+ 4x = 105
x
= 13
yd.
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