請問有冇人識計呢條六年級既方程式式?
回答 (3)
2006-10-21 9:38 pm
✔ 最佳答案
設原有x元,(1-1/4-7/20)x=320
8/20x=320
8x=6400
x=800
2006-10-22 1:52 am
Let y be the money
y x (1- 1/4 - 7/20)=320
___320____
Y= 2/5
y= 800
so the money is $800
y x (1- 1/4 - 7/20)=320
___320____
Y= 2/5
y= 800
so the money is $800
參考: me
2006-10-21 11:13 pm
320 ÷ ( 1 - 1/4 - 7/20 )
=320 ÷ 8/20
=320 × 20/8
=800
=320 ÷ 8/20
=320 × 20/8
=800
收錄日期: 2021-04-13 14:30:52
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061021000051KK02252