 
 <translate> For each type of shirt, he needed to buy, 40 employees / 4 = 10 shirts. White men's T - shirts cost $20 / shirt * 10 shirts = $200. White women's T - shirts cost $5 less, or ($20 / shirt - $5 / shirt) * 10 shirts = $15 / shirt * 10 shirts = $150. Black men's t - shirts cost, $18 / shirt * 10 shirts = $180. Black women's T - shirts cost $ 5 less, so ($18 / shirt - $5 / shirt) * 10 shirts = $13 / shirt * 10 shirts = $130. Now add up all these quantities to find the total: $200 + $150 + $180 + $130 = $660. The final answer: 660. <ibo> Maka ụdị uwe elu ọ bụla, ọ chọrọ ịzụta, ndị ọrụ 40 / 4 = 10 uwe elu. T-shirts ndị nwoke na-acha ọcha na-efu $ 20 / uwe elu * 10 shirts = $ 200. T-shirts ndị inyom na-acha ọcha na-efu $ 5 dị ala, ma ọ bụ ($ 20 / uwe elu - $ 5 / uwe elu) * 10 shirts = $ 15 / uwe elu * 10 shirts = $ 150. T-shirts ndị isi ojii na-efu, $18 / uwe elu * 10 uwe elu = $180. T-shirts ụmụ nwanyị ndị isi ojii na-efu $ 5 dị ala, yabụ ($ 18 / uwe elu - $ 5 / uwe elu) * 10 uwe elu = $ 13 / uwe elu * 10 uwe elu = $ 130. Ugbu a, gbakọọ ọnụ ọgụgụ ndị a ọnụ iji chọpụta ngụkọta ha: $200 + $150 + $180 + $130 = $660. Azịza ikpeazụ ya bụ: 660. 