Geometry- 21

Carpenter Rajesh has a circular piece of plywood of diameter 30 feet. He has cut out two disks of diameter 20 feet and 10 feet. What is the diameter of the largest disk that can be cut out from the remaining portion of the plywood piece?

A. >8.00 feet and ≤ 8.20 feet

B. >8.21 feet and ≤ 8.40 feet

C. >8.41 feet and ≤ 8.60 feet

D. >8.61 feet and ≤ 8.80 feet

E. >8.81 feet and ≤ 9.00 feet

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XAT-2012 Detailed Solutions (Quantitative Ability)

click here for useful concepts                     click here for puzzles

Q1) A spherical metal of 10 cm radius is molten and made in to 1000 smaller spheres. In this process, the surface area of the metal is increased by:

(A)  1000

(B)   100

(C)   10

(D)  No change

(E)   None of the above  

Solution follows here...

XAT-2012 Answer Key (English Language Ability and Logical Reasoning)

Q1) “on a wing and a prayer ….

A.     High in spirits

B.      Well prepared

C.      Over confident

D.     Under prepared

E.      buoyant

Answer (D)

XAT-2012 Answer Key (Quantitative Ability)

Q1) A man borrows Rs 6000 at 5% interest,……

A.     3162.75

B.      4125.00

C.      4155.00

D.     5100.00

E.      5355.00

Answer (C)

XAT-2012 Analysis

This time XLRI surprised by reducing the number of questions.

Quantitative Ability – 28 Q’s

English Language Ability and Logical Reasoning – 32 Q’s

Decision Making – 25 Q’s

Total number of Q’s = 85

Time allotted:

As usual 2 Hrs. for this and 20 minutes for the “Analysis of the given two statements” section

Differential Marking:

Even though differential marking is given, it is not that much influential when compared to the XAT-2011. Maximum marks given to question is 2 and the marks allotted to the Q’s range in 1,1.5 and 2 marks.

Negative Marking: it is straight forward. ¼th of the marks allotted to each question  

Difficulty Level:

QA is of moderate difficulty level. This is much easier compared to XAT-2011 QA section and is in similar levels of XAT-2009 and 2010.

English section is of “Easy to Moderate” difficulty level.

DM is tough. The case lets are lengthy and the answer options are not so choosy. Overall, this section is very difficult to crack.

Overall, XLRI-2012 can be rated as “moderate to tough”          

For XAT-2012 Quantitative Ability Answer Key, click this link:

http://mathbyvemuri.blogspot.com/2012/01/xat-2012-answer-key.html

For XAT-2012 English & LR Answer Key, click this link:

http://mathbyvemuri.blogspot.com/2012/01/xat-2012-analysis-english-language.html

For XAT-2012  Quantitative Ability Detailed Solutions, click this link:

http://mathbyvemuri.blogspot.com/2012/01/xat-2012-detailed-solutions.html