gwd25-20

[lpwpete]

gwd-25-20
Based on this year’s costs, an orcharde grower budgets P dollars for planting N new trees next year. If the average cost of planting each tree were to increase 25 percent from this year’s cost ,then the greatest number of trees that the orchard grower could plant next year using P dollars would be.



A. 20% less than N


B. 25%less than N



C. equal to N



D. 20%greater than N



E. 25% greater than N

[aerobert]

原本的價格：P/N
漲價後：1.25P/N
漲價後所能買到的數量=原本的預算/漲價後的價格=P/1.25p/N=0.8N
所以漲價後買到的數量比為漲價買到的數量少20%

[lpwpete]

真是好人!
感謝大大的詳解!
乾恩!