MATH F.1

👨🏻‍🏫 學術台數學

ddobtn

2008-06-11 1:40 am

The selling price of a standard ticket in a concert is 300 and the selling price of a concessionary ticket sold, and the in come obtained from the tickets is 410000.

點解and點做

更新1:

(A)find the number of concessionary tickets sold

更新2:

(B)find the number of standard tickets sold.

更新3:

(C) if 2% of the income obtained from selling every standard tickets and that from the concessionary tickets, find the amount donated.

回答 (1)

2008-06-11 3:10 am

✔ 最佳答案

(A) Let x be the number of concessionary tickets sold .

100x + (2x - 150)300 = 410000

100x + 600x - 45000 = 410000

700x = 410000 + 45000

700x = 45500

x = 650

(B) 650 x 2 - 150

= 1300 - 150

= 1150

(C) 345000 x 2%

= 345000 x 0.02

= 6900

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