The Circumference Worksheet Page 7
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10GRE PowerPrep Solutions
Test 1: First QR Section
Question 13 Test 1, First QR Section
Of the 750 participants in a professional meeting....
2
Probability: Fractions
Answer:
5
1. First, determine the number of men and woman at the meeting:
750 total
– 450 women
300 men
2. Now determine the number of each gender under 30:
1
1
→
of the female participants are less than 30
× 450 = 225 women less than thirty
2
2
1
1
→
of the male participants are less than 30
× 300 = 75 men less than thirty
4
4
3. The total number of people less than 30 years of age is 300 (225 + 75). Find the probability:
number of favorable outcomes
300
30
2
→
→
→
Probability =
number of possible outcomes
5
750
75
Question 14 Test 1, First QR Section
DISTRIBUTION OF RANKINGS
The sum of the five average ratings was....
Data Analysis
Answer: 22/100
1. Start by computing the sums of the average ratings using the table:
Category
A
B
C
Convenience
5.1
8.0
4.3
Friendliness
5.0
5.5
5.4
Price
5.0
6.4
3.5
Promptness
6.5
6.9
4.1
Reliability
7.8
7.5
4.9
Total:
29.4 34.3 22.2
The airline with the least sum is C (22.2)
2. Now look at the pie graph to see how many travel agents ranked Airline C first. The bottom left
quadrant of the circle has 20 agents rating CAB, meaning C was first, A was second and B was
third. Above this, 2 agents rated CBA, meaning C was first, B was second, and A was third. So in
all 22 agents (20 + 2) rated C first.
3. Now determine the fraction: 22 travel agents out of 100 total rated C first, so 22/100.
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