- A₹1700
- B₹1000
- C₹1790
- D₹900
Step-by-Step Solution
. (The prices ₹30 and ₹60 become ₹20 and ₹50, and .) ₹1700 subtracts only from the product; ₹1790 subtracts a single ₹10; ₹900 forgets the +100 contributed by .
Answer: B) ₹1000
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