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bharat rajpurohit

· started a discussion

· 1 Months ago

MIS PRINT IN EITHER QUESTION OR SOLUTION (Question: 124293.0 )

IF THE PROFIT IS 2.5% THEN IN NUMERATOR IT SHOULD BE 102.5

Question:
A sells a pen to B at a gain of 20% and B sells it to C at gain of 10% and C sells it to D at a gain of 12.5%. If D pays Rs.14.85, what did it cost A?
Options:
A) Rs.6
B) Rs.8
C) Rs.10
D) Rs.12
E) None of these
Solution:

\(\cfrac{120}{100 }\) × \(\cfrac{110}{100 }\) × \(\cfrac{112.5}{100 }\) × x = 14.85

x = \(\cfrac{14.85 × 100 × 100 × 100}{120 × 110 × 112.5}\)       = Rs. 10/-


Knowledge Expert

· commented

· 1 Months ago

hi, its 12.5% gain, thats why 112.5 is in numerator....a typing error occurred....its corrected..
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