 
<translate> Diane mere 1000 * 15 = $15000 na ahịa n'ihi na o nwere ndị ahịa 1000 nke ọ bụla zụrụ akwụkwọ $15. 37% nke ndị ahịa ahụ weghachiri akwụkwọ ha, nke pụtara na o nwere.37 * 1000 = 370 nloghachi. Nke ọ bụla n'ime akwụkwọ ndị ahụ e weghachiri azụ bụ akwụkwọ dị $15 (U.S.), n'ihi ya, o nwetara $5,550 (U.S.) n'ego e weghachiri azụ. Maka ego ọ ga-enweta, anyị ga-ewepụ ego ọ ga-enweta n'ahịa ahụ ma nweta 15000 - 5550 = $9450 n'ego ọ ga-enweta. Azịza ya bụ: 9450. <eng> Diane made 1000 * 15 = $15000 in sales because she had 1000 customers each buy a $15 book. 37% of those customers returned their books, so that means she had .37 * 1000 = 370 returns. Each of those returns was for a $15 book, so she had 370 * 15 = $5,550 in returns. For her total leftover income, we subtract the returns from the sales and end up with 15000 - 5550 = $9450 in income. The answer: 9450. 