Holding all other things constant, an increase in the company's required return on investment (roi) will affect:

It will affect the profit after taxes of the company.

Explanation:

A higher ROI means that for the same level of investment, higher levels of return are achieved. In this case, the company's return is the profits after taxes, those that shareholders have the right to claim. Without considering variances in the level of investment, higher levels of profit can be obtained by a more significant difference between revenue and total expenses (including costs, operative expenses and depreciation and interests)

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