F1 MATH 求救!!!!!!

蠻

2009-08-19 4:17 am

Mr Lee wants to attract more customers by lowering the price of the lemonade by 12.5%.
After lowering the price ,the number of customers increases by 20%.

(a) What is the new price of each glass of lemonade?

(b) How much does he earn daily after the price reduction?

(c) Should Mr Lee lower the price by 12.5% or should he keep the price at $4 in
order to earn moremoney?

更新1:

唔好意思~ 漏左第一句:

更新2:

Mr Lee is a hawker who sells lemonade. The cost of each glass of lemonade is $2.4 , and the selling price is $4.

回答 (1)

myisland8132

2009-08-19 6:23 am

✔ 最佳答案

(a) 4(1-12.5%)=3.5
the new price of each glass of lemonade is $3.5
(b) 3.5-2.4=1.1
He earn daily after the price reduction is $1.1 for each glass of lemonade
(c) Let the no. of customer is X, originally
Before reduction the price, his profit is
(4-2.4)X=1.6X
After rduction, his profit is
(1.1)(1.2X)=1.32X
Since 1.32X<1.6X, Mr Lee should keep the price at $4 in
order to earn moremoney.

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