Answer: Rich's share in the partnership is 28%.
The simplified ratio to represent their investments in the partnership is 6:12:7.
We arrive at the answer as follows:
The total of individual shares of all the partners in a partnership should be 100%.
Given this,


Rich's share = 28%
Now, that we have the shares of all the partners, we can write the ratio of their individual investments as 24:48:28.
We can divide 24, 28 and 48 by 4 in order to arrive at a simplified investment ratio.
After dividing by 4, the simplified ratio will be 6:12:7.