While purchasing one item costing Rs. 400, I had to pay the sales tax at 7% and on another costing Rs. 6400, the sales tax was 9%. What percent of sales tax I had to pay, taking the two items together on an average? 


(a) 
8% 
(b) 
8% 
(c) 
8 
(d) 
8 
While purchasing one item costing Rs. 400, I had to pay the sales tax at 7% and on another costing Rs. 6400, the sales tax was 9%. What percent of sales tax I had to pay, taking the two items together on an average? 


(a) 
8% 
(b) 
8% 
(c) 
8 
(d) 
8 
Total sale tax paid = 7% of Rs. 400 + 9% of Rs. 6400.
= Rs. 604.
Total cost of items = Rs. (400 + 6400) = Rs. 6800.
Req. percentage = 8