- Traveling at a constant rate of 15 miles per hour, it took Bob x hours to go
from his home to his school. Traveling at a constant rate of 20 miles per
hour, it took Bob x − 1 hours to travel the same route. What is the value
of x?
A 2
B 3
C 4
D 5
E 6
For this question, indicate all of the answer choices that apply.- If xy = 12, and x + y = 7, then y could equal which of the following?
A 3
B 4
C 5
D 6
E 7 - If a^2 + b = 7, then b could equal which of the following?
A 6
B 8
C 9
D 10
E 11 - A group of x friends agreed to equally split the bill for a meal that cost y
dollars. If z friends decide not to pay how much will each of the remaining
friends have to pay, in terms of x, y, and z?
A (^) x – zy
B yz
C (^) xy
D (^) z – xy
E y – xz
CHAPTER 7 ■ TWO ESSENTIAL QUANTITATIVE REASONING STRATEGIES 155
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