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Q.
The average price of 10 books is Rs. 12 while the average price of 8 of these books is Rs. 11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what ia the pice of each of these two books ?
A.
16,12
B.
10,16
C.
23,9
D.
8,7
View Answer
Correct choice: B
Explanation:
Total pice of the two books = Rs. [(12 x 10) - (11.75 x 8)] = Rs. (120 - 94) = Rs. 26. let the price of one book be Rs. x Then, the price of other book = Rs. (x + 60% of x) = Rs.(x+(3/5)x) = Rs. (8/5)x So, x+(8/5)x =26 <=> x =10 The prices of the two books are Rs. 10 and Rs. 16
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