 <translate> 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. <yor> Diane ṣe 1000 * 15 = $15000 nínú ìtajà nítorí ó ní àwọn oníbàárà 1000 tí ẹnìkọ̀ọ̀kan wọn ra ìwé $15 37% àwọn oníbàárà wọ̀nyìí ló dá ìwé wọn padà, èyí túmọ̀ sí pé ó ní.37 * 1000 = 370 àwọn tí ó dá ìwé wọn padà. Ìwé kan tó jẹ́ dọ́là mẹ́ẹ̀ẹ́dógún ni wọ́n dá padà fún un, nítorí náà, ó ní iye tí wọ́n dá padà tó jẹ́ àádọ́ta dín nírínwó [370] ìlọ́po mẹ́ẹ̀ẹ́dógún [15]. Tá a bá yọ owó tó ń wọlé fún un kúrò lára owó tó ń wọlé fún un, a óò rí i pé owó tó ń wọlé fún un jẹ́ 15000 - 5550 = $9450 Ìdáhùn náà ni: 9450. 