A sold a watch to B at a gain of 10% and B sold it to C at a loss of 10%. If C paid ₹990 for it, then how much amount paid by A ?

A ने B को घड़ी 10% लाभ से बेच दी और B ने इसे C को 10% हानि से बेच दी। यदि C ने घड़ी का मूल्य ₹990 चुकाया हो, तो बताइए A ने उस घड़ी को कितने में खरीदा था ?

1. A₹900
2. B₹1,000
3. C₹1,200
4. D₹950

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Correct answer: B. ₹1,000

Explanation

x × 1.1 × 0.9 = 990 → 0.99x = 990 → x = ₹1,000.

x × 1.1 × 0.9 = 990 → x = ₹1,000।