Shone Inc is a division of a watch manufacturer. Last period sales were $$3,000,000,$ operating income was $$300,000,$ and operating assets were $$1,500,000.$ Compute the following rounding to the nearest tenth of a percent.

Show supporting calculations for parts a$.$ through d$.$

a$.$ Sales Margin Ratio

b$.$ Capital Turnover

c$.$ ROI $($return on investment$)$

d$.$ Assume that the minimum required rate of return is $20\%.$ Compute the RI $($residual income$)$ for the division.