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.
Doris and Edward both collect stamps. If Doris gives Edward
[#permalink]
11 Jul 2019, 06:11
11 Jul 2019, 06:11
Expert Reply
2
Bookmarks
00:00
Question Stats:
100% (03:49) correct
0% (00:00) wrong based on 9 sessions
Hide Show timer Statistics
Doris and Edward both collect stamps. If Doris gives Edward 72 stamps, then Doris will have 4 times the number of stamps that Edward has. If Doris gives Edward 129 stamps, then Doris will have 3 times the number of stamps that Edward has. How many more stamps than Edward does Doris now have?
A. 156
B. 387
C. 672
D. 750
E. 828
A. 156
B. 387
C. 672
D. 750
E. 828
Re: Doris and Edward both collect stamps. If Doris gives Edward
[#permalink]
12 Jul 2019, 00:04
12 Jul 2019, 00:04
1
Carcass wrote:
Doris and Edward both collect stamps. If Doris gives Edward 72 stamps, then Doris will have 4 times the number of stamps that Edward has. If Doris gives Edward 129 stamps, then Doris will have 3 times the number of stamps that Edward has. How many more stamps than Edward does Doris now have?
A. 156
B. 387
C. 672
D. 750
E. 828
A. 156
B. 387
C. 672
D. 750
E. 828
Here,
For the first statement it can be written as,
\(D - 72 = 4 (E + 72)\)
\(D - 72 = 4E + 288\)
\(D = 4E + 360\) -------------I
For the 2nd statement
\(D -129 = 3 (E + 129)\)
\(D = 3E + 516\)------------------II
From I & II,
\(4E + 360 = 3E + 516\)
\(E = 156\)
Doris now have
\(D = (4 * 156) + 360 = 984\) stamps
Therefore,
Doris have = \(984 - 156 = 828\) more stamps than Edward now.
Re: Doris and Edward both collect stamps. If Doris gives Edward
[#permalink]
17 Mar 2023, 08:56
17 Mar 2023, 08:56
Hi, I perfectly understand the solution, but i have a problem with the language.
Before I look the answer provided below, I make an assumption that "the number of stamps that Edward has" means the number of stamps that Edward has BEFORE doris gave him stamps. D-72=4(E)
Could you explain what's the phrase/grammar used in this question that lead us to take "the number of stamps that Edward has AFTER doris gave him stamps." ?
D-72=4(E+72)
Before I look the answer provided below, I make an assumption that "the number of stamps that Edward has" means the number of stamps that Edward has BEFORE doris gave him stamps. D-72=4(E)
Could you explain what's the phrase/grammar used in this question that lead us to take "the number of stamps that Edward has AFTER doris gave him stamps." ?
D-72=4(E+72)
Carcass wrote:
Doris and Edward both collect stamps. If Doris gives Edward 72 stamps, then Doris will have 4 times the number of stamps that Edward has. If Doris gives Edward 129 stamps, then Doris will have 3 times the number of stamps that Edward has. How many more stamps than Edward does Doris now have?
A. 156
B. 387
C. 672
D. 750
E. 828
A. 156
B. 387
C. 672
D. 750
E. 828
