A.  Rs. 7.98

B.  Rs. 8.08

C.  Rs. 8.98

D.  Rs. 9.08

1
Correct Answer :
Rs. 7.98
Explanation :

Total quantity of petrol consumed in three years is:

( 4000 / 7.5 ) + ( 4000 / 8 ) + ( 4000 / 8.5 )

=> 4000 ( 2/15 + 1/8 + 2/17 ) = 76700 / 51

=> Total amount spent = 3 x 4000 = Rs. 12000/-

=> So, Average Cost = 12000 / (76700/51) = ( 12000 x 51 ) / 76700 = Rs. 7.98/-


Related Questions

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python