Answer:
21.81 %
Explanation:
given,
$600 up to $800 3
800 up to 1,000 7
$1,000 up to $1,200 11
$1,200 up to $1,400 12
$1,400 up to $1,600 40
$1,600 up to $1,800 24
$1,800 up to $2,000 9
$2,000 up to $2,200 4
Total = 3 + 7 + 11 + 12 + 40 + 24 + 9 + 4 = 110
the frequency of $1,600 to $1800
= [tex]\dfrac{24}{110}[/tex]
=21.81 %