9. Two trains left the Chicago train station heading to NY on parallel tracks. The first one left at 1 PM and averaged 45 mph. The express train left at 3 PM and averaged 60 mph. At what time did the
express train pass the first train? Fill in a table, set up an equation, and solve.
10. lan and Mark left New Trier on bicycles heading in the opposite direction. After two hours, they were
68 miles apart. Find the speed of each rider if Mark averages 2 mph faster than lan. Fill in a table, set
up equation, and solve.
List which number set(s) the following numbers belong:
REAL, WHOLE, IRRATIONAL, INTEGER, NATURAL, RATIONIAL
11.
-8
11.
12.
V13
12.
3
13.
13.
Answers: 1) y = 1/3 2) w = -1 3) m = 1/3 4) a = 0 5) No solution 6) p = 13/57) ARN 8) x = -29/12
9) 9 pm 10) lan = 16 mph Mark = 18 mph 11) Real, Rational, Integer 12) Real, Irrational 13) Real,
Rational