$"16.$ The sweater buyer is buying $12,000$ cashmere crew neck and $8,000$ V$-$neck sweaters at a cost of $$32\mathrm{.}50.$ The buyer plans to retail the sweaters as follows:

Crew neck to retail at $$74\mathrm{.}00$; V$-$neck to retail at $$79\mathrm{.}00$

$"$

a$.$ Calculate the IMU $ and IMU $\%$ for the crew neck. Quantity Unit Cost Total Cost Unit Retail Total Retail

$12,000$ $$32\mathrm{.}50$ $$390,000\mathrm{.}00$ $$74\mathrm{.}00$ $$888,000\mathrm{.}00$

MU $$=$ Retail $-$Cost

MU $$=$ $$498,000\mathrm{.}00$

MU $\%=$ MU $$/$ Retail $ $56\mathrm{.}1$

b$.$ Calculate the IMU $ and IMU $\%$ for the V$-$ neck. Total Cost Unit Retail Total Retail

$8,000$ $$32\mathrm{.}50$ $$260,000\mathrm{.}00$ $$79\mathrm{.}00$ $$632,000\mathrm{.}00$

MU $$=$ Retail $-$Cost

MU $$=$ $$372,000\mathrm{.}00$

MU $\%=$ MU $$/$ Retail $ $58\mathrm{.}9$

c$.$ Calculate the CMU $\%$ for the total buy. Total Cost Total Retail CMU $ CMU $\%$

CMU $ $=$Total Retail $-$Total Cost $$650,000\mathrm{.}00$ $$1,520,000\mathrm{.}00$

how do i find the cmu$\%$ and the cmu$$?$