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24/8 = 3, in other words, the running rate is three times as fast as the jogging rate, and this implies that the time he spends three times as long as that he spends running.
So, assume that he spends time t running, then he spends time 3t jogging.
the total time is 2.5 hrs. so we have t...

This is similar to the problem you posted previously.
Assume that the width is W yards, then the length L is 2W yards.
We have 2W + 2x(2W) = 42
solve for W, we get W= 7 yards, then L = 2W = 14 yards.
Area = WxL = 7x14 = 98 yard2

0.4%=0.004
Year Population
2000 82,366 x (1- 0.004)0 = 82,366
2001 ...