The price of flight tickets of an airline company from Hong Kong to Bangkok for adults and children are $2000 and $ 1500 respectively. If the number of tickets sold is 300,which corresponds to a sales of $ 572000,find the numbers of adult and child passengers.
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1題F.4數學題唔識做 高手請!!
2008-10-29 3:54 am
回答 (2)
2008-10-29 4:00 am
✔ 最佳答案
let X be numbers of adultY be numbers of child
X Y=300 -------------------------------1
2000X 1500Y=572000---------------2
From1, X=300-Y-----------------------3
put3 into 2,
2000(300-Y) 1500Y=572000
Y=56
X=300-56
=244
參考: I
2008-10-29 4:02 am
Let the number of adult flight tickets be x and children ticket be y.
x + y = 300
2000x + 1500y = 572000
y = 300 - x
2000x + 1500( 300 - x) = 572000
2000x + 450000 - 1500x = 572000
500x = 122000
x = 244
y = 300 - 244
y = 56
Easy question even F.2 knows how to do it.
x + y = 300
2000x + 1500y = 572000
y = 300 - x
2000x + 1500( 300 - x) = 572000
2000x + 450000 - 1500x = 572000
500x = 122000
x = 244
y = 300 - 244
y = 56
Easy question even F.2 knows how to do it.
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