數學的問題!!!!!!!!!!!!!!!!!

2008-01-07 2:27 am
I want someone to to solve this problem.

Mr Lam bought 30 mobile phones at $1600 each in July.The price increased to $1750 in August and then decreased to $1400 in September.If Mr Lam sold 16 and 14 mobile phones in August and September respectively,how much did he gain or loss?

Please answer this question with process!

回答 (5)

2008-01-07 2:40 am
✔ 最佳答案
Money got in August:
$1750*16
=$28 000
Money got in September:
$1400*14
=$19 600
Total amount of money got from selling phones:
$28000+$19600
=$47 600
Total amount of money used in buying phones:
$1600*30
=$48 000
He lost:
$48000-$47600
=$400
參考: myself(:
2008-01-07 3:34 am
Money got in August:
$1750*16
=$28 000
Money got in September:
$1400*14
=$19 600
Total amount of money got from selling phones:
$28000+$19600
=$47 600
Total amount of money used in buying phones:
$1600*30
=$48 000
He lost:
$48000-$47600
=$400 OK?
2008-01-07 2:55 am
30(1600)=48000
The total coat in July= $48000

16(1750-1600)= 2400
He gain $2400 in August

14(1600-1400)=2800
He loss $2800 in September

2800-2400=400
Ans: He loss $400
參考: me
2008-01-07 2:42 am
1600*30-1750*16-1400*14
=48 000-28 000-19 600
=400

He losses $400.
參考: 自己
2008-01-07 2:40 am
The total coat of the mobile phones in July=30(1600)=48000

The total coat of the mobile phones in August=14(1750)=24500

The total coat of the mobile phones in September=16(1400)=22400

The total coat of the mobile phones in these three month=48000-(24500+22400)=1100

答 : He loss $1100 .


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