The marked price of an electronic watch in a store is ₹15,620 and it is available at a discount of 27%. What is the price (in ₹, to the nearest tens) that a customer pays if he buys from the store?

Correct — A. A discount of 27% leaves 73% of the marked price to be paid.

price paid = 15,620 × 73⁄100

15,620 × 73 = 11,40,260
so the price paid = ₹11,402.60

To the nearest tens the units digit 2 rounds down:
₹11,402.60 → ₹11,400 → option (a)

Why the others are wrong

• (b)
  9,880 — ₹9,880 implies a discount of about 37% — 1 − 9,880⁄15,620 is roughly 0.367. The stem gives 27%.
• (c)
  12,500 — ₹12,500 is what a 20% discount produces: 15,620 × 0.80 = ₹12,496, which is ₹12,500 to the nearest tens.
• (d)
  10,800 — ₹10,800 implies a discount of nearly 31%, since 1 − 10,800⁄15,620 is about 0.309. Four points too much wipes out ₹600.

Discount is always reckoned on the marked price, so the price paid is MP × (100 − d)⁄100.

Working with 73% in one multiplication beats finding the discount and subtracting it: one step, one chance to slip.

The rounding instruction is part of the question. ₹11,402.60 to the nearest tens is ₹11,400, because the tens place moves only when the units digit is 5 or more.

Key facts

• Price paid = marked price × (100 − discount%)⁄100.
• 15,620 × 73⁄100 = ₹11,402.60.
• ₹11,402.60 to the nearest tens is ₹11,400, since the units digit is 2.

Common traps

• Answering ₹4,217.40, the discount itself, instead of the amount paid.
• Rounding ₹11,402.60 up to ₹11,410 because of the paise.
• Treating 27% as the share paid rather than the share taken off.

No directly related past PYQ was found.