But The V&nbsp C Decreased From

But the v  C decreased from 20100 to 30200, profit margin will correspondingly decrease from 20 to 15.
(B) only the e  E, that is, only the v  C the fraction of the surface changes, but its value is unchanged, that is, only the numerator and denominator to the same number of multiplication and division, profit margins will remain unchanged. 80c
20 v 20 m and 160c 40 v 40 m clear margin between the two is 20, because m ‘is still  100, while the v  C  20100  40200 in these two cases, both on behalf of equal value.
(C) If e is greater than E, that is, if the variable capital to increase faster than total capital, profit margins will improve.
If 80c 20 v 20 m into 120c 40 v 40 m, profit margins will be from 20 to 25, because m ‘is constant, v  C  20100 has been increased to 40160, from a  5, up to 1  4.
If v and C according to changes in the same direction, we can look at this change in this volume, as if