"While purchasing one item costing Rs. 400, I had to pay the sales tax at 7% and on another
Channel: Doubtnut
Date: 05/04/2020

"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
 the sales tax I had to pay, taking the two items together on an average?
`8%`
b. `8(15)/17%`
c. `8(13)/17%`
d. `8 1/2%`"