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用戶190513

2007-07-22 3:31 am

1/20 of Peter's monthly income is spent on food, 1/5 on entertainment, 1/4 on savings, and 1/10 on transport. What fraction of the total income is spent on these items?
(10 marks)

更新1:

2 2/3m of material are needed to make a shirt. how many metres would be needed to make 18 shirts?

更新2:

THANK YOU VERY MUCH!!!

回答 (4)

YungWai Shing

2007-07-22 3:37 am

✔ 最佳答案

The fraction of the total income is spent on these items
=1/20+1/5+1/4+1/10
=1/20+4/20+5/20+2/20
=12/20
=3/5

參考: me

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[匿名]

2007-07-22 3:44 am

I try to answer this question.
If you add 1/20, 1/5, 1/4 and 1/10 together,
Will become 1/20+4/20+5/20+2/20,
Then it gives 12/20 = 3/5
Ans: Peter spent 3/5 of his total income on those expenses.

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[匿名]

2007-07-22 3:40 am

let f for food, e for entertainment ,s for saving ,t for transport

total outcome :1/20f +1/5e+1/4s+1/10t
1/20f +4/20e+5/20s+2/20t
12/20
:6/10 for using f,e,s,t

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用戶211234

2007-07-22 3:36 am

1/20+1/5+1/4+1/10
= 1+4+5+2/20
=12/20
=3/5

參考: 自己計的

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