In this way, it took 8 people 35 days, that is, 280 person-days, and completed 1/3.

Then 14 people need x days, which means 14x people-days, which means 2/3.

Then there is: 280 person days/14x person days =( 1/3)/(2/3), and x=40 is obtained.

The next question can be calculated like this.

Let molecule A have denominators of A and B, and compare the sizes of a/b and (a+ 1)/(b+ 1).

a/b-(a+ 1)/(b+ 1)=[a(b+ 1)-b(a+ 1)]/b(b+ 1)

=(a-b)/b(b+ 1)

Starting from this problem, we only consider positive numbers.

So when a>b, A-B >; 0，a/b & gt； (a+ 1)/(b+ 1)

a & ltb，a-b & lt； 0，a/b & lt； (a+ 1)/(b+ 1)

If the denominator in the question is greater than the numerator, it is a.

Therefore, 200 1/2002