GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 15 Dec 2019, 16:38

GMAT 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

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

M70-08

Author Message
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 59730

Show Tags

03 Sep 2018, 03:05
00:00

Difficulty:

25% (medium)

Question Stats:

100% (00:31) correct 0% (00:00) wrong based on 8 sessions

HideShow timer Statistics

Which of the following does NOT equal 25.25?

A. $$25\frac{1}{4}$$
B. $$0.2525*10^2$$
C. $$25+0.25$$
D. $$\frac{104}{4}$$
E. $$\frac{2,525}{100}$$

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 59730

Show Tags

03 Sep 2018, 03:06
Official Solution:

Which of the following does NOT equal 25.25?

A. $$25\frac{1}{4}$$
B. $$0.2525*10^2$$
C. $$25+0.25$$
D. $$\frac{104}{4}$$
E. $$\frac{2,525}{100}$$

We’ll go for ALTERNATIVE because the question asks us to examine the answers.

(A) As we know: $$25\frac{1}{4}=25+\frac{1}{4}$$, and $$\frac{1}{4}=0.25$$. Therefore $$25\frac{1}{4}=25+0.25$$, which equals 25.25. Not the correct answer.

(B) Move the decimal point 2 spaces to the right, so it becomes 25.25. No!

(C) This is similar to (A). No!

(D) $$\frac{104}{4}=\frac{100}{4}+\frac{4}{4}=25+1=26$$. Not 25.25! We can stop looking – that’s our answer.

_________________
Intern
Joined: 09 Sep 2018
Posts: 1

Show Tags

27 Sep 2018, 07:41
1
2.525/100 (E) is equal to 0.02525 which is different from 25.25. can someone explain
Math Expert
Joined: 02 Sep 2009
Posts: 59730

Show Tags

27 Sep 2018, 09:06
1
karimismail wrote:
2.525/100 (E) is equal to 0.02525 which is different from 25.25. can someone explain

It's not 2.525 (2 point 525), it's 2,525 (two thousand, five hundred twenty-five)
_________________
Re: M70-08   [#permalink] 27 Sep 2018, 09:06
Display posts from previous: Sort by

M70-08

Moderators: chetan2u, Bunuel