中一暑作數學

2010-07-14 7:15 am
Anumber of students rent a coach to go for a picnic.if there were 10 students more,each of them would have to pay $30.if there were 8 students less,each of them would have to pay $50.find the number of students going for the picnic.


the figure shows a glass of orange juice and a marble.
(A)if the capacityof the glass is 280ml,estimate the volume of the orange iuice in the glass.
(B)if the diameter of the marble is 1cm estimate the height of the glass.
更新1:

the figure only shows a glass of juice and a marble

回答 (2)

2010-07-14 2:59 pm
✔ 最佳答案
Question 1
Let the number of students be x ,
30(10+x)=50(x-8)
300+30x=50x-400
x=35

Question 2 :
There isn't any figure provided, I cannot solve it
2010-07-14 9:17 am
Where is the figure ?


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