87. It would take Todrick 3 days and his brother 6 days to complete the job alone.
89. 9
91. 68
93.
20 shares
$90
95. 230 ft
97. 2 mph
99. 40 min
101. 120, 000 ft2
103. CE=6 mi or CE =3162205≈15.4 mi
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