Jane bought x tarts, she ate 1/4 of them , then her brother and sister ate
7 tarts.If 2 tarts were left,find the value of x.點解&點做,詳細解釋!
maths
2007-10-06 9:08 pm
回答 (3)
2007-10-06 9:14 pm
✔ 最佳答案
1.Jane bought x tarts,she ate 1/4 of them,then her brother and sister ate 7 tarts.If 2 tartswere left,find the value of x.
x-(1/4)x-7=2
1x-(1/4)x-7=2
(3/4)x-7=2
(3/4)x=9
x=12
∴The value of x is 12.
2007-10-06 10:08 pm
If x = the total no.of tarts
Jane has eaten 1/4, so that there are 3/4 left.
3/4x = 7+2 = 9
therefore x = 12
Jane has eaten 1/4, so that there are 3/4 left.
3/4x = 7+2 = 9
therefore x = 12
2007-10-06 9:36 pm
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