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Ankur

· started a discussion

· 1 Months ago

wrong (Question: 115452.0 )

sriman ji agar initial prize 12 tha to ghatne k bad 11 hoga ..tab us extra 1 rupyee me 1 se jyada yani 1.09 kele extra milenge....correct answer 13 hoga...pehle 13 me 12 kele mil re the..ab price 1 rupee ghat gya yani 12 k 12 isliye ab 13 me 13 kele milenge.....pta ni yar aap kaise explain krte ho

Question:
Divya goes to buy fruits and after a lot of bargaining is able to get the price of a dozen apples reduced by Re. 1 from the initial price, thereby enabling her to get 1 apple extra for every rupee saved. (Getting no discount on the extra apple). What is the initial price of a dozen apples?
Options:
A) \(\unicode{x20B9} \)10
B) \(\unicode{x20B9} \)13
C) \(\unicode{x20B9} \)12
D) \(\unicode{x20B9} \)15
Solution:
Ans: (b)

Lets try with some equation and hit and trial

real cost= 12 apples * "price p" = 12p

discounted cost= 12 apples * (p-1) = 12(p-1)

so,

=> real cost - discounted cost = an extra apple at price "p"

=> 12p - 12(p-1) = p

=> 12p - 12p + 12 = p

Therefore, p = 12.

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