87. It would take Todrick 3 days and his brother 6 days to complete the job alone.

89. 9

91. ${\displaystyle \frac{6}{8}}$

93.

1. 20 shares

2. $\$90$

95. 230 ft

97. 2 mph

99. 40 min

101. $120,000{\text{ ft}}^2$

103. $CE=6\text{ mi}$ or $CE ={\displaystyle \frac{3162}{205}}\approx 15.4\text{ mi}$