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Doubts of LR sheet Number 5 ON arrangements

Post your doubts pertaining to LR class sheets and Basic Reference books.

Doubts of LR sheet Number 5 ON arrangements

Postby sadmin » Tue Feb 26, 2013 10:24 am

Please post your doubts on LR sheet 5 ON arrangements on this thread.
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Re: Doubts of LR sheet Number 5 ON arrangements

Postby Anantdeep » Fri Mar 01, 2013 6:53 am

q- 30) 2 APPROACHES---

1) A GIVES 300 TO C + 100 TO D , THEN ALSO IS ABLE TO BUY 3 SHIRTS WORTH 600...IT MEANS
A = 600 + 300 +100
= 1000
SO , D = 1000/3 = 333 --- A SHAWL CAN BE BOUGHT BY DEEPAK ---- ANSWER B

2) BUT IF WE TRY TO FIND D , BY D = C-B

C = 700 , BECAUSE HE BORROWS 300 TO REACH LEVEL OF 1000( A JACKET)
B = 500 , BEACAUSE HE BORROWS 100 TO REACH A LEVEL OF 600 ( A SWEATER)

HENCE, D = C-B = 200 ( A SHIRT CAN BE BOUGHT ) -- ANSWER A

SIR, WHICH ONE IS CORRECT ?
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Re: Doubts of LR sheet Number 5 ON arrangements

Postby tpsriram » Fri Mar 01, 2013 6:53 am

my doubts in LR-5 are:30 and third condition from question 41 to 46. i want to solve questions from 41 to 46 by my own but i did not understand the third condition.

thanking you
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Re: Doubts of LR sheet Number 5 ON arrangements

Postby sadmin » Fri Mar 01, 2013 6:53 am

LR 5/30. Four friends Ashok, Bashir, Chirag and Deepak are
out shopping. Ashok has less money than three times
the amount that Bashir has. Chirag has more money
than Bashir. Deepak has an amount equal to the
diference of amounts with Bashir and Chirag. Ashok
has three times the money with Deepak. They each
have to buy at least one shirt, or one shawl, or one
sweater, or one jacket that are priced Rs. 200, Rs.
400, Rs. 600 and Rs. 1000 a piece, respectively. Chirag
borrows Rs. 300 from Ashok and buys a jacket. Bashir
buys a sweater after borrowing Rs. 100 from Ashok
and is left with no money. Ashok buys three shirts.
What is the costliest item that Deepak could buy with
his own money ?
(a) A shirt (b) A shawl
© A sweater (d) A jacket

Solution:

Let A, B,C,D be the amounts of money with the given four friends

A < 3B , A =3D , D = (B-C) OR (C-B)

B= Takes a loan of Rs 100 and buys goods worth Rs 600 therefore B must have started with Rs 500 exactly

A = gives 300 + 100 AND purchases shirts worth 600 therefore A must have atleast 1000 Rs. Further, it is also given that A < 3B therefore A must have an amount < Rs 1500 to start with.


C= Takes a loan of 300 and buys goods worth Rs 1000 therefore C must have started with atleast Rs 700

A= 3D, the range of D must vary from min A/3 to max value of A/3

Min value of A/3 = 1000 => min value of D= 1000/3 = 333.33 Rs

Max value of A/3 = Rs 1500 => max value of D= 1500/3 = Rs 500

Thus the costliest item that D can purchase is less than Rs 500; This must be a shawl.
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Re: Doubts of LR sheet Number 5 ON arrangements

Postby sadmin » Fri Mar 01, 2013 6:54 am

(iii)No blue-dressed dancer is to be next to in the same
row as a red-dressed dancer.

interpretation of this condition
This implies that A blue dancer may exist in the same row as a red dancer but they do not set next to each other. for example the third row
which contains three dancers may have the following arrangementt

R G B - so both Blue and green dancers are present in the row but not next to each other; G sits between the two of them
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