Answer
a) $6250$ people
b) $3$ days
Work Step by Step
a)
$C(d) = 2(5^{d})$
$C(d) = 2(5^{5})$
$ = 2(3125)$
$= 6250$ people
b)
$250 = 2(5^{d})$
$125 = 5^{d}$
$5^{3} = 5^{d}$
$d = 3$ days
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