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?

A Rs. 5, Rs. 7.50
B Rs. 8, Rs. 12
C Rs. 10, Rs. 16
D Rs. 12, Rs. 14

Correct Answer: Rs. 10, Rs. 16

Total price of the two books
= Rs.
= 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
Bissoy MCQ
#Arithmetic Ability #Average

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