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標題:

F1 maths

發問:

1. A shopkeeper buys a table for $460 and 6 chairs for $90 each.He sells the table at a profit of 30% and the chairs at a loss of 5%.(a) Find the profit from selling the table(b) Find the loss in selling all the chairs(c) Find the overall percentage profit.2.Rachel buys a hir dryer and a rice cooker for... 顯示更多 1. A shopkeeper buys a table for $460 and 6 chairs for $90 each.He sells the table at a profit of 30% and the chairs at a loss of 5%. (a) Find the profit from selling the table (b) Find the loss in selling all the chairs (c) Find the overall percentage profit. 2.Rachel buys a hir dryer and a rice cooker for $825 in total and then sells them at profits of 44% and 22% respectively.It si given that the hair dryer is sold for $108. a)Find the respectively costs of the hair dryer and the rice cooker. b)What is the overall percentage profit of these two items? 式+Ans..thx>
最佳解答:

1. A shopkeeper buys a table for $460 and 6 chairs for $90 each.He sells the table at a profit of 30% and the chairs at a loss of 5%. (a) The profit from selling the table = $460 * 30% = $138 (b) The loss in selling all the chairs = 6 * $90 * 5% = $27 (c) Overall profit = $138 - $27 = $111 Overall cost = $460 + $540 = $1000 The overall percentage profit = $111/$1000 * 100% = 11.1% 2.Rachel buys a hair dryer and a rice cooker for $825 in total and then sells them at profits of 44% and 22% respectively.It si given that the hair dryer is sold for $108. a) The cost of the hair dryer = $108 / (1 + 44%) = $75 The cost of the rice cooker = $825 - $75 = $750 b) The profit of the hair dryer = $108 - $75 = $33 The profit of the rice cooker = $750 * 22% = $165 Overall profit = $33 + $165 = $198 The overall percentage profit = $198 / $825 * 100% = 24%

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