 <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. <yor> Fún oríṣi aṣọ kọ̀ọ̀kan, ó ní láti ra, àwọn òṣìṣẹ́ 40 / 4 = àwọn aṣọ 10. T-shirt funfun ti àwọn ọkùnrin máa ń náni dọ́là méjìdínlógún [$20] sí ọ̀kan * ọ̀kan nínú àwọn aṣọ náà lọ́nà mẹ́wàá [$200]. Owó tí wọ́n fi dín owó tí wọ́n fi ń ra àwọn aṣọ aláwọ̀ funfun fún àwọn obìnrin kù ni dọ́là márùn-ún, ìyẹn ni pé, dọ́là márùn-ún sí dọ́là márùn-ún owó tí wọ́n fi ń ra aṣọ aláwọ̀ funfun fún àwọn obìnrin. T-shirt àwọn ọkùnrin aláwọ̀ dúdú ń náni, $18 / shirt * 10 shirts = $180. T -shirt àwọn obìnrin aláwọ̀ dúdú máa ń dín owó tí wọ́n ń san kù ní dọ́là márùn-ún, ìyẹn ni pé ($18/shirt - $5/shirt) * 10 shirt = $13/shirt * 10 shirt = $130. Wàyí o, kó o fi gbogbo iye wọ̀nyí kún un kó o lè rí iye tó pọ̀ tó: $200 + $150 + $180 + $130 = $660. Ìdáhùn tí wọ́n fún un níkẹyìn ni pé: 660. 