HKDSE 數學 Percentage 百分數 【5分鐘懶人包】 教識你6年來唔識的數學 | HKDSE 2018 MATH Paper 1 Q7 | 一站式幫你溫習 скачать в хорошем качестве

HKDSE 數學 Percentage 百分數 【5分鐘懶人包】 教識你6年來唔識的數學 | HKDSE 2018 MATH Paper 1 Q7 | 一站式幫你溫習

HKDSE 2018 Mathematics (Compulsory Part) Paper 1 Question 7 Q: The marked price of a vase is 30% above its cost. A loss of $88 is made by selling the vase at a discount of 40% on its marked price. Find the marked price of the vase. Let x be the cost Marked price = x(1 + 30%) = 1.3x 1.3x(1 – 40%) = x – 88 0.78x = x – 88 88 = 0.22x 400 = x Therefore, the marked price = 1.3($400) = $520 -------------------------------------------------------------------------------- 【ALAN SIR 中學數學課程】歡迎查詢 ⭐升中一至中三⭐現正公開接受報名 課程對象 適合 BAND 1 A (英文) 中學數學之同學 實體和網授同時提供 新學年將於 7/2023 中旬 開課， 填妥表格，我們會有專人和閣下聯絡 https://forms.gle/nM9nQaS2GkVXqUVLA https://forms.gle/nM9nQaS2GkVXqUVLA https://forms.gle/nM9nQaS2GkVXqUVLA --------------------------------------------------------------------------------- F.1 【Percentages 百分數】系列    • Percentages  (Discount) | 百分數 | 折扣 | 1   F.3【Percentages 百分數】系列    • Percentage 百分數 interest 利息 compound intere...