Answer:
he should sell it for ₹8800 to make a profit of 10%
Explanation:
if he lost 15% despite selling at a price of ₹6800
that means he sold it for 100%-15%=85%
85% - ₹6800
1% - ₹80
to make a profit of about 10% means 100%+10 which is 110%
110% --> 110 * ₹80
--> ₹8800