Answer: 41.67%
Given:
If X=Joe’s investment in the business
4X= Thea’s investment
7X= Taylor’s investment
When it reached 1.6 million,
X+4X+7X=1,600,000
12x=1,600,000
X=1,600,000/12
X= 133,333.3 Joe’s investment
4x= 4(133,333.3)
=533,333.3 is Thea’s investment.
If this amount will be added to Joe’s, Joe’s investment will be 666,666.7 or 41.67% of the business