標題:
F.1 數學題....唔明....... 10點10點,,,,急需急需
發問:
1) Eric earns $ 16 000 per month. He spends 35% of his salary on rent, 45% on other expenses, and saves the rest. a. How much does he save each month? b. If his salary and rent remains unchanges, and he wants to spend $ 800 more on other expense, find th percentage decrease in his savings.
最佳解答:
其實這條數唔難,可能睇唔明吧 先看翻譯版,再看答案 Eric 每月薪金有 $ 16 000 . 35%薪金 用來 交租, 45%薪金用在其他支出, 其餘的則存起來. 1a.問他每月儲蓄多少 1b.他的薪金和租金不變,他想用多$800在其他支出,找出儲蓄部分下降了多少百分比 1a He saves: $16000x(1-35%-45%) =$16000x20% =$3200 1b New amount of his savings $3200-$800 =$2400 Precentage change of his savings [($2400-$3200)/$3200}x100% = -$800/$3200 x100% =-25% therefore, his savings decrease in 25% 或者 1b Precentage change of his savings $800/$3200 x100% =25% therefore, his savings decrease in 25%
He save each month: 16000 X (100-35-45%) =16000 x 20% =3200 2006-12-02 17:21:18 補充： b. the percentage decrease in his savings is: 800 / 16000 X 100% = 5%
F.1 數學題....唔明....... 10點10點,,,,急需急需
發問:
1) Eric earns $ 16 000 per month. He spends 35% of his salary on rent, 45% on other expenses, and saves the rest. a. How much does he save each month? b. If his salary and rent remains unchanges, and he wants to spend $ 800 more on other expense, find th percentage decrease in his savings.
最佳解答:
其實這條數唔難,可能睇唔明吧 先看翻譯版,再看答案 Eric 每月薪金有 $ 16 000 . 35%薪金 用來 交租, 45%薪金用在其他支出, 其餘的則存起來. 1a.問他每月儲蓄多少 1b.他的薪金和租金不變,他想用多$800在其他支出,找出儲蓄部分下降了多少百分比 1a He saves: $16000x(1-35%-45%) =$16000x20% =$3200 1b New amount of his savings $3200-$800 =$2400 Precentage change of his savings [($2400-$3200)/$3200}x100% = -$800/$3200 x100% =-25% therefore, his savings decrease in 25% 或者 1b Precentage change of his savings $800/$3200 x100% =25% therefore, his savings decrease in 25%
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其他解答:He save each month: 16000 X (100-35-45%) =16000 x 20% =3200 2006-12-02 17:21:18 補充： b. the percentage decrease in his savings is: 800 / 16000 X 100% = 5%
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