BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATBootcamp Starts Sep 28
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE BOOTCAMP

Live Online Bootcamp Class with Top GMAT Expert Chris Peckover

15 live classes from Sep 28, 2026

Schedule
Mon to Fri · 7:00 to 10:00 PM ET
Included
Live classes + 6 months of TTP OnDemand
  • Boost your GMAT score in less than one month in a live online class
  • 6 months access to TTP OnDemand video courses included
View bootcamp & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

GMAT LSAT CR Investigators concluded that human failure

Expert replies
by poonam1279 » Sat Jul 18, 2009 9:47 am
Investigators concluded that human failure was not responsible for the fatal airplane crash last August, and since that time new and more stringent rules for identifying and reporting mechanical problems have been in effect. That accounts for the fact that reports of airplane mechanical problems have increased in frequency by 50 percent since last August.

Which one of the following is an assumption underlying the argument in the passage?

(A) Airplane travel is still relatively safe, despite the increase in reported mechanical problems.

(B) Mechanical problems in airplanes have increased dramatically since last August.

(C) Mechanical problems in airplanes have not increased by 50 percent since last August.

(D) Airlines are less reluctant to report mechanical problems than they previously were.

(E) Mechanical problems in airplanes have become easier to detect since last August.
OA after discussions
GMAT PREP 2-630
MGMAT (2):630
Join the discussion
Source: — Critical Reasoning |

Hi

by ashaydesai » Sat Jul 18, 2009 10:03 am
IMO D..Please post OA
Join the discussion

by scoobydooby » Sat Jul 18, 2009 11:12 am
C for me

A. out of scope

B. weakens. gives an alternative cause

C. negate. leads us to B and weakens. if mechanical problems have gone up by 50%, then it weakens the conclusion that stringent rules have led to 50% increase in reports of mechanical problems.

D. out of scope

E. weakens. gives an alternative cause
Last edited by scoobydooby on Sat Jul 18, 2009 11:22 am, edited 1 time in total.
Join the discussion

by ranell » Sat Jul 18, 2009 11:21 am
(A) Airplane travel is still relatively safe, despite the increase in reported mechanical problems. – the fact that airplane is still safe is out of scope, it doesn’t explain the increased number of reports of mechanical problems

(B) Mechanical problems in airplanes have increased dramatically since last August. – according to the argument, the number of reports has increased dramatically, but not the actual mechanical problems (reports don’t mean actual mechanical problems as reports can be false)

(C) Mechanical problems in airplanes have not increased by 50 percent since last August – CORRECT as the conclusion is the reports were increased by 50% which means already existing problems were reported rather than new problems.

(D) Airlines are less reluctant to report mechanical problems than they previously were. – how reluctant are airlines to report mechanical problems is not applicable to our case

(E) Mechanical problems in airplanes have become easier to detect since last August. – the fact that mechanical problems have become easier to detect is out of scope [/b]
Join the discussion

by nervesofsteel » Sat Jul 18, 2009 12:50 pm
one more for C

If problems have not increased by 50 % then only the new laws were effective in bringing problems which were not reported earlier...

if problems have increased by 50 % then new law doesn't make sense as those problem would have been reported even in the absence of any law...
Join the discussion

by ashton_s_83 » Mon Jul 20, 2009 8:14 am
i would say (E)
Join the discussion

by khanshainur » Sun May 15, 2016 11:25 pm
I still feel E should be the answer
Join the discussion