Lesson: Intermediate Problem Solving - 20t01

Practice: Unlikely Answer Choices

[Page 20 of 27]
Use your knowledge of unlikely or trap answers to identify the culprit choices in the following question, then select the correct answer and then click Continue.

The price of a certain stereo is discounted by 10 percent, and the reduced price is then discounted by 25 percent. This series of successive discounts is equivalent to a single discount of
28.00%
31.50%
32.50%
34.00%
35.00%

Choice (E), 35.00%, is equal to the sum of the two discount percents. However, this problem (and many Problem Solving percent questions) involves a successive percent change. This means we must find the price of the stereo after the first discount, and then apply the second discount to the new price. We cannot simply add the individual percents. Choice (E) is a trap answer.

Choice (C) is correct. Picking 100 as the original price of the stereo, we find:

Price after first discount: $100 × 0.10 = $10; $100 – $10 = $90

Price after second discount: $90 × 0.25 = $22.50; $90 – $22.50 = $67.50

Total discount: $100 – $67.50 = $32.50; $32.50 is 32.50% of $100.

Back Next

Next to display next topic in the chapter.

Video Lessons and 10 Fully Explained Grand Tests

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

Quantitative Aptitude Reasoning English General Knowledge Picture Patterns
More for You
MCQ with question Explanations Scholarships and Financial Aid

Arithmetic

Lessons on Basic to Advance Arithmetic with practice questions

Data Sufficiency

Easily crack the most logical section of the GMAT

PPSC - Assistant District Public Prosecutor Exam

Learn about the exam of PPSC - Assistant District Public Prosecutor

All in this Category

You may be interested in

Colleges in peshawar

A list of major colleges in Peshawa ...

Colleges in Dera ismail khan

Find major schools in your location ...

MS in USA for International Student

Calculate your chances to have MS D ...

Study in Australia

Opportunities of Studies in Austral ...

Pakistan Army - PMA Long Course

Join Pakistan Army through PMA Long ...

GRE Chemistry

Complete review of GRE Chemistry wi ...

Engineering Universities in Sindh

A list of Engineering colleges and ...

Universities in sindh

A comprehensive list of universitie ...

About us

EntryTest.com is a test preparation service for students seeking successful career.

About Disclaimer

Quick Test Prep

NUST NET IBA Karachi SAT LUMS LCAT LSE

 

NTS GAT NTS NAT GMAT GRE ACT

Study Abroad

Education Abroad Business Schools MS in USA