Rate and Ratio

Using the concept of ratio

if the contribution the work of each people in one day is K
Also, let the total value of the work is 1

then K=1/(10x)=1/[8(x+1)]

So 10x=8(x+1)
2x=8
x=4

The value of x is 4

2008-06-02 23:07:07 補充：
下面個位講不清楚10x=8(x+1)的來源

10x = 8(x + 1)
10x = 8x + 8
2x = 8
x = 4

2008-06-02 19:55:17 補充：
投我一票, 唔該
唔洗咁複習, 用工數去諗咪得囉
x 個人做 10 日, 即係 10x 工做起
同樣, x+1 個人做 8 日, 即係 8(x+1) 工做起
兩個相等嘛