The given question is a GMAT Data sufficiency Word problem. Exercise caution while solving questions of this kind. It is important to evaluate each statement independently and meticulously. Quite often, students end up making mistakes with questions of this kind.

This data sufficiency problem consists of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements, plus your knowledge of mathematics and everyday facts (such as the number of days in a leap year or the meaning of the word counterclockwise), you must indicate whether -

- Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
- Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
- BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
- EACH statement ALONE is sufficient to answer the question asked.
- Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

All numbers used are real numbers.

A figure accompanying a data sufficiency question will conform to the information given in the question but will not necessarily conform to the additional information given in statements (1) and (2)

Lines shown as straight can be assumed to be straight and lines that appear jagged can also be assumed to be straight

You may assume that the positions of points, angles, regions, etc. exist in the order shown and that angle measures are greater than zero.

All figures lie in a plane unless otherwise indicated.

In data sufficiency problems that ask for the value of a quantity, the data given in the statement are sufficient only when it is possible to determine exactly one numerical value for the quantity.

Question 7: **A candy manufacturer decided to decrease the weight of each candy bar, while retaining the price. By how many cents did the per kilogram cost of candy change after the reduction in weight? **

**Statement 1**: The weight of each piece of candy bar reduced by 9 grams.

**Statement 2**: The weight of each piece of candy bar reduced by 9%.

@ INR

**Q1. What kind of an answer will the question fetch?**

The question asks us to find the change in per kilogram cost of the candy in cents after the weight of each candy was reduced.

The data provided in the statements will be sufficient if we get a unique value in cents.

**Q2. When is the data not sufficient?**

If after using the information given in the statements, we are not able to determine a unique value in cents for the change in cost per kilogram of the candy, the data is NOT sufficient.

**Let us assign the following variables.**

Let the initial cost per kilogram be x cents; let the cost per kilogram after reducing the weight be y cents, where y > x.

We need to find (y − x).

**Statement 1**: The weight of each piece of candy bar reduced by 9 grams.

We do not know either x or y from this statement.

We cannot find a unique value for (y - x).

Hence, statement 1 is not sufficient.

__Eliminate answer options A and D__.

**Statement 2**: The weight of each piece of candy bar reduced by 9%.

All that we can deduce is that the new weight of the candies is 9% lesser than its original weight or that the new weight is 91% of the original weight.

Statement 2 also does not provide us with either x or y.

We are **not able to get a unique value for (y - x)** using statement 2, statement 2 is also NOT Sufficient.

Hence, statement 2 is not sufficient.

__Eliminate answer options B__.

**Statements**: "The weight of each piece of candy bar reduced by 9 grams" and "The weight of each piece of candy bar reduced by 9%"

9% reduction is 9 grams

We can deduce that the weight of each candy bar was 100 grams before the reduction.

We still do not have any information on x and y.

We are **not able to get a unique value for (y - x)** despite combining the two statements, the data provided is NOT sufficient..

Hence, statements together are not sufficient.

__Eliminate answer option C__.

Try it free!

Register in 2 easy steps and

Start learning in 5 minutes!

1. 700 Level GMAT Sample Question in Inequalities & Polynomials

2. GMAT Hard Math Data Sufficiency Question

3. GMAT Data Sufficiency Question | Inequalities & Exponents

4. 700 800 Level GMAT Sample Question | Probability

5. GMAT Hard Math Question | Number Properties DS Practice

6. 700 800 Level GMAT Word Problem | Rates Problem Solving Question

7. GMAT DS Sample Question | Percentage | Ratios | Word Problem

8. GMAT 700 800 Level Question | Geometry | Area of Circles

9. GMAT Data Sufficiency | Hard Math Question | Geometry

10. GMAT Hard Math Questions | Algebra | Absolute Values Sample Question

Copyrights © 2016 - 21 All Rights Reserved by Wizako.com - An Ascent Education Initiative.

Privacy Policy | Terms & Conditions

GMAT^{®} is a registered trademark of the Graduate Management Admission Council (GMAC). This website is not endorsed or approved by GMAC.

GRE^{®} is a registered trademarks of Educational Testing Service (ETS). This website is not endorsed or approved by ETS.

SAT^{®} is a registered trademark of the College Board, which was not involved in the production of, and does not endorse this product.

Wizako - GMAT, GRE, SAT Prep

An Ascent Education Initiative

48/1 Ramagiri Nagar

Velachery Taramani Link Road.,

Velachery, Chennai 600 042. India

**Phone:** (91) 44 4500 8484

**Mobile:** (91) 95000 48484

**WhatsApp:** WhatsApp Now

**Email:** learn@wizako.com

Leave A Message