標題:
可唔可以比條式我?!
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Peter has $300 at the end of June. In the next two months, he spends $100 each month, and then saves $40 each month thereafter.(a)At the end of December, how much does Peter have?! (a)既答案係$260...求式...唔該... (b)Simon has $500 at the end of June. How much should he spend each month on average so that he has the... 顯示更多 Peter has $300 at the end of June. In the next two months, he spends $100 each month, and then saves $40 each month thereafter. (a)At the end of December, how much does Peter have?! (a)既答案係$260...求式...唔該... (b)Simon has $500 at the end of June. How much should he spend each month on average so that he has the same of money as Peter at the end of December? (b)既答案係$40...都係求式...唔該... 更新: 我知(a)既式喇...但係想知(b)既式....唔該>我自己諗嫁...個答案又啱:) (b)式...?>
最佳解答:
(a) $300 - $100 x 2 + $40 x 4 = $260 (b) let A be the Answer $500 + 6 x A = $260 6A = $240 A = $40
其他解答:
(a) $ (300 - 100 x 2 + 40 x 4) =$260 (b) $ (500-260)/6 =$400D7DAC4E7B8CAAC5
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