form 1 MATHS.

[匿名]

2008-07-31 10:29 pm

The selling price of a standard ticket in a concert is $300 and the selling price of a concessionary ticket is $100.It is known that the number of standard ticket sold is 150 less than twice that concessionary tickets sold,and the income obtained from the tickets is $410000.
a) Find the number of concessionary tickets sold.
b)Find the number of standard tickets sold.
c) What is the differnet between the total income obtained from the standard tickets and that from the concessionary tickets?
d)If 2% of the income obtained from the selling every standard ticket will be donated to charitable organization,find the amount donated.

回答 (1)

waiting

2008-07-31 11:02 pm

✔ 最佳答案

Let the number of concessionary ticketssold be x, the number of standard tickets sold be (2x-150)
300(2x-150)+100x=410000
600x-45000+100x=410000
700x=455000
x=650
The number of concessionary tickets sold is 650,the number of standard tickets sold be 1150.
c) What is thedifferent between the total income obtained from the standard tickets and thatfrom the concessionary tickets?
= 300x1150-100x650
= 345000-65000
=280000
d)If 2% of theincome obtained from the selling every standard ticket will be donated tocharitable organization, find the amount donated.
300x1150x2%
=3x1150x2
=6900

參考: myself

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