1) The perimeter of a rectangular playground is 324m. The length is increased by 6m and the width by 3m. The area is then increased by 1/9 of its former value. Find the original dimensions of the playground.
2) A two-digit number is less than three times the product of its digit by 8, and the digit in the tenth place exceeds the digit in the unit place by2. Find the number.
Please help me to solve them by clear steps n show the steps. Thanks : )
F4 Math - Simultaneous Equa.
2010-08-30 12:05 am
回答 (1)
2010-08-30 4:02 am
✔ 最佳答案
As follows:圖片參考：http://i707.photobucket.com/albums/ww74/stevieg90/08-36.jpg
圖片參考：http://i707.photobucket.com/albums/ww74/stevieg90/09-41.jpg
2010-08-29 20:02:48 補充：
Therefore, the number is 64
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