The average price of 10 books is Rs 12 while the…

Are you looking for correct answer of The average price of 10 books is Rs 12 while the…? Here we have shared detailed answer with explanations.

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 is the price of each of these two books?

  1. A. Rs. 5, Rs. 7.50
  2. B. Rs. 8, Rs. 12
  3. C. Rs. 10, Rs. 16
  4. D. Rs. 12, Rs. 14

Answer: Option C

Here is complete explanation of The average price of 10 books is Rs 12 while the….

Solution(By ExamCraze Team)

Total price of the two books
= Rs. [(12 × 10) - (11.75 × 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. $$left( {x + frac{3}{5}x} right)$$
= Rs. $$left( { frac{8x}{5}} right)$$
So, $${x + frac{8x}{5}}$$   = 26
⇒ 13x = 130
⇒ x = 10

Leave a Comment