(b) Let, the marked price on item = ₹ 100
Discount allowed = 10% = ₹ 10
∴ Discounted price of item = 100 - 10 = ₹ 90
Sales tax = 8% on ₹ 90 =
= = ₹ 7.20
∴ Total paid amount = 90 + 7.20 = ₹ 97.20
When ₹ 97.20 is paid, then the marked price = ₹ 100
and ₹ 1 is paid, then the marked price = ₹
when ₹ 680.40 is paid, then the marked price
= ₹
× 680.40
= ₹
= ₹ 700