Let's denote the revenues in the previous year as R and the profits in the previous year as P. The percentage of profits to revenues in the previous year would then be (P/R) * 100%.

In 1999, the revenues fell by 30 percent, so the revenues in 1999 would be 70% of R, which is 0.7R. The profits in 1999 were 10 percent of the revenues in 1999, so the profits in 1999 would be 0.1 * 0.7R = 0.07R.

We are given that the profits in 1999 were 69.99999999999999 percent (which we can round to 70% for simplicity) of the profits in the previous year. So, 0.07R = 0.7P.

Now we can solve for P in terms of R:

0.7P = 0.07R
P = (0.07R) / 0.7
P = 0.1R

Now we have the profits in the previous year as 0.1R. To find the percentage of profits to revenues in the previous year, we calculate (P/R) * 100%:

(P/R) * 100% = (0.1R/R) * 100%
= 0.1 * 100%
= 10%

Therefore, the percentage of profits to revenues in the previous year was 10%.
전년도의 매출을 R로, 전년도의 이익을 P로 표시해 보겠습니다. 그러면 전년도 매출 대비 이익의 비율은 (P/R) * 100%가 됩니다.

1999년에 매출이 30% 감소했으므로 1999년의 매출은 R의 70%인 0.7R이 됩니다. 1999년의 이익은 1999년의 매출의 10%이므로 1999년의 이익은 0.1 * 0.7R = 0.07R이 됩니다.

1999년의 이익이 전년도의 이익의 69.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999