Solve each question Round your answer to two digits 2 Working alone Micaela can sweep a porch in 9 3 minutes One day her friend Huong helped her and it only took 4 5 minutes Find how long it would take Huong to do it alone A 10 55 minutes C 11 23 minutes B 8 72 minutes D 7 82 minutes 4 Kim left the White House driving toward the ocean two hours before Kathryn Kathryn drove in the opposite direction going 10 mph slower than Kim for three hours after which time they were 410 mi apart What was Kim s speed A 65 mph C 30 mph B 55 mph D 60 mph 3 3 Kayla left home and drove toward the lake Trevon left one hour later driving 10 mph faster in an effort to catch up to her After five hours Trevon finally caught up What was Kayla s average speed A 69 mph C 30 mph B 50 mph D 67 mph