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 unchanged, and he wants to spend $800 more on other expenses, find the percentage decrease inhis savings.
maths
2006-11-08 5:25 am
回答 (5)
2006-11-08 5:33 am
✔ 最佳答案
A) $16000(1-35%-45%)=$3200
B)ORIGINAL EXPENSES=$16000*45%
=$7200
NEW EXPENSES=$7200+$800
=$8000
RENT=$16000*35%=$5600
NEW SAVINGS=16000-5600-8000=$2400
% DECREASE= (3200-2400)/3200 *100%
=800/3200 *100%
=25%
2006-11-09 9:27 pm
a) 16000-(16000*35%+16000*45%) = $3200
b) new monthly saving =3200-800 = $2400
% decrease in his saving = ( 3200/16000 - 2400/16000) * 100% = 5%
b) new monthly saving =3200-800 = $2400
% decrease in his saving = ( 3200/16000 - 2400/16000) * 100% = 5%
2006-11-08 5:38 am
a) $ 16 000*(1-35%-45%)
=$ 16 000*20%
=$3 200
b) ($ 3 200-$ 800)-$ 3 200/$ 3 200←分數 *100%
= - 25%
=$ 16 000*20%
=$3 200
b) ($ 3 200-$ 800)-$ 3 200/$ 3 200←分數 *100%
= - 25%
2006-11-08 5:30 am
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2006-11-09 21:09:35 補充：
妳又唔用補充翻譯中文!!!搞到我話唔到比妳知!!超級負面!!!!
2006-11-09 21:09:35 補充：
妳又唔用補充翻譯中文!!!搞到我話唔到比妳知!!超級負面!!!!
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