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Question

Mr Omar bought a laptop at a discount. If he sold the laptop at its usual price, he would receive $550 more than the amount he paid. If he sold it at 80% of its usual price, he would receive $350 less than the amount he paid. How much did Mr Omar pay for the laptop?

Answer

100% of usual price -> discounted price + 550

80% of usual price -> discounted price – 350

20% of usual price -> 550 + 350

                                   = 900

100% of usual price -> 900 × 5

                                      = 4500

Discounted price -> $4500 – $550

                                = $3950 (Ans)

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amount Mr Omar paid ——- 10 units
usual price ——- 10 units + 550
80% x (10 unit + 550) = 8 units + 440 = 10 units – 350
1 unit = (440 + 350)/(10 – 8) = 395
10 units = 3950

Ans : $3950.

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