GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Energy use by year
[#permalink]
08 Oct 2017, 01:28
08 Oct 2017, 01:28
1
Expert Reply
7
Bookmarks
00:00
Question Stats:
42% (05:24) correct
57% (03:34) wrong based on 40 sessions
Hide Show timer Statistics
Attachment:
#GREpracticequestion In 1995, how many of the categories shown had energy use greater than 150 million kilowatt-hours.jpg [ 41.68 KiB | Viewed 9062 times ]
Attachment:
#GREpracticequestion If the population of Country Y increased by 20 percent from 1990 to 1995.jpg [ 35.81 KiB | Viewed 9021 times ]
1) In 1995, how many of the categories shown had energy use greater than 150 million kilowatt-hours?
A. None
B. One
C. Two
D. Three
E. Four
2) If the population of Country Y increased by 20 percent from 1990 to 1995, approximately what was the percent decrease in the per capita personal use of energy between those two years?
A. 0%
B. 17%
C. 25%
D. 35%
E. 50%
3) Which of the following can be inferred from the graphs?
Choose \(all\) that apply.
❑ Farm use of energy increased between 1990 and 2010.
❑ In 2010, industrial use of energy was greater than industrial use of energy in 1995.
❑ The percentage of energy use by government in 2010 was at least three times the percentage of energy use by government in 1990.
❑ More kilowatt-hours of energy were used for farm purposes in 2005 than in 2000.
❑ The energy usage by type was most equally distributed over the four categories in 1990.
A. None
B. One
C. Two
D. Three
E. Four
Show: :: OA
C
2) If the population of Country Y increased by 20 percent from 1990 to 1995, approximately what was the percent decrease in the per capita personal use of energy between those two years?
A. 0%
B. 17%
C. 25%
D. 35%
E. 50%
Show: :: OA
D
3) Which of the following can be inferred from the graphs?
Choose \(all\) that apply.
❑ Farm use of energy increased between 1990 and 2010.
❑ In 2010, industrial use of energy was greater than industrial use of energy in 1995.
❑ The percentage of energy use by government in 2010 was at least three times the percentage of energy use by government in 1990.
❑ More kilowatt-hours of energy were used for farm purposes in 2005 than in 2000.
❑ The energy usage by type was most equally distributed over the four categories in 1990.
Show: :: OA
A,D
Re: Energy use by year
[#permalink]
13 Oct 2017, 20:47
13 Oct 2017, 20:47
answer 1 - Industrial and government
2 category
2 category
Re: Energy use by year
[#permalink]
13 Oct 2017, 20:55
13 Oct 2017, 20:55
1
let the population in 1990 = 100, 1995 = 1.2*100 = 120
personal use 1990 = 160, Per capita use = 1.6
Personal use 1995 = 120, Per capita use = 1
change = (1.6-1)/1.6 = .37 ~ 37%
personal use 1990 = 160, Per capita use = 1.6
Personal use 1995 = 120, Per capita use = 1
change = (1.6-1)/1.6 = .37 ~ 37%
