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08 Jan 2014, 07:10
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
83% (00:56) correct
17%
(00:58)
wrong
based on 1655
sessions
History
Date
Time
Result
Not Attempted Yet
The Official Guide For GMAT® Quantitative Review, 2ND Edition
3/100 + 5/1,000 + 7/100,000 =
(A) 0.357
(B) 0.3507
(C) 0.35007
(D) 0.0357
(E) 0.03507
3/100 + 5/1,000 + 7/100,000 =
(A) 0.357
(B) 0.3507
(C) 0.35007
(D) 0.0357
(E) 0.03507
Problem Solving
Question: 27
Category: Arithmetic Operations on rational numbers
Page: 65
Difficulty: 600
Question: 27
Category: Arithmetic Operations on rational numbers
Page: 65
Difficulty: 600
GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions Project
Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.
We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.
Thank you!
Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.
We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.
Thank you!
08 Jan 2014, 07:10
Kudos
Bookmarks
SOLUTION
3/100 + 5/1,000 + 7/100,000 =
(A) 0.357
(B) 0.3507
(C) 0.35007
(D) 0.0357
(E) 0.03507
Convert the fractions into the decimals:
\(\frac{3}{100} + \frac{5}{1,000} + \frac{7}{100,000} =0.03+0.005+0.00007=0.03507\).
Answer: E.
3/100 + 5/1,000 + 7/100,000 =
(A) 0.357
(B) 0.3507
(C) 0.35007
(D) 0.0357
(E) 0.03507
Convert the fractions into the decimals:
\(\frac{3}{100} + \frac{5}{1,000} + \frac{7}{100,000} =0.03+0.005+0.00007=0.03507\).
Answer: E.
08 Jan 2014, 21:37
Kudos
Bookmarks
One way to do this problem:
3*10^-1 + 5*10^-2 + 7*10^-5
= 0.3+0.05+0.00007
= 0.35007
(OR)
Alternate approach would be like this if you do not prefer handling decimals:
(30,000+5000+7)/10^5
= 35007/10^5
= 0.35007
Ans is (C).
3*10^-1 + 5*10^-2 + 7*10^-5
= 0.3+0.05+0.00007
= 0.35007
(OR)
Alternate approach would be like this if you do not prefer handling decimals:
(30,000+5000+7)/10^5
= 35007/10^5
= 0.35007
Ans is (C).
