Free GMAT Sample Paper

Expert replies

ravikashyap1196: Newbie | Next Rank: 10 Posts; Posts: 7; Joined: Wed May 22, 2013 11:07 pm; Location: New Delhi

by ravikashyap1196 » Wed Aug 07, 2013 9:01 pm

A roast was cooked at 325Â° F in the oven for 4 hours. The internal temperature rose from 32Â° F to 145Â° F. What was the average rise in temperature per hour?

A. 20.2Â° F/hr
B. 28.25Â° F/hr
C. 32.03Â° F/hr
D. 7Â° F/hr
E. 37.29Â° F/hr

https://bit.ly/15JPAXK

Like this post

Source: Beat The GMAT — Quantitative Reasoning | Wed Aug 07, 2013 9:01 pm

nipunranjan: Senior | Next Rank: 100 Posts; Posts: 37; Joined: Wed Mar 10, 2010 3:35 am; Thanked: 4 times; GMAT Score:700

by nipunranjan » Sun Aug 11, 2013 8:19 am

The rise in temperature= 145-32=113 Degree F

Time = 4 Hour

Average rise in temperature = 113/4 = 28.25 (Option B)

Like this post

Jim@StratusPrep: MBA Admissions Consultant; Posts: 2279; Joined: Fri Nov 11, 2011 7:51 amFollowed by: 266 members; Location: New York; Thanked: 660 times; GMAT Score:770

by Jim@StratusPrep » Tue Aug 20, 2013 6:55 am

You really don't have to do the math on this problem. The answer can only end in .00, .25, .50 or .75. Ballparking your answer will show you that D is not the answer so it must be B.

GMAT Answers provides a world class adaptive learning platform.
-- Push button course navigation to simplify planning
-- Daily assignments to fit your exam timeline
-- Organized review that is tailored based on your abiility
-- 1,000s of unique GMAT questions
-- 100s of handwritten 'digital flip books' for OG questions
-- 100% Free Trial and less than $20 per month after.
-- Free GMAT Quantitative Review

Like this post

Uva@90: Master | Next Rank: 500 Posts; Posts: 490; Joined: Thu Jul 04, 2013 7:30 amFollowed by: 5 members; Location: Chennai, India; Thanked: 83 times

by Uva@90 » Sat Aug 24, 2013 9:16 pm

Jim@StratusPrep wrote:You really don't have to do the math on this problem. The answer can only end in .00, .25, .50 or .75. Ballparking your answer will show you that D is not the answer so it must be B.

Jim,
How do u conclude that answer can only end in .00,.25,.50,.75 ?

Could u please clarify it so that it will helpful in my future GMAT problems.

Thanks in advance.
Regards,
Uva.

Like this post

GMAT/MBA Expert

[email protected]: Elite Legendary Member; Posts: 10392; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Sun Aug 25, 2013 12:30 am

Hi Uva.

Since the prompt mentions "4 hours", you have to divide by 4. Dividing any integer by 4 means that there's only a handful of possible outcomes for what follows the decimal. For example:

4/4 = 1.0
5/4 = 1.25
6/4 = 1.5
7/4 = 1.75
and the pattern repeats
8/4 = 2.0
9/4 = 2.25
etc.

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review