 
 <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. <hau> Diane ta yi 1000 * 15 = $ 15000 a tallace-tallace saboda tana da abokan ciniki 1000 kowannensu ya sayi littafin $ 15. Kashi 37 cikin dari na wadannan kwastomomi sun mayar da littattafansu, don haka wannan yana nufin tana da.37 * 1000 = 370 da aka mayar. Kowane ɗayan waɗannan ya dawo ne don littafin $ 15, don haka tana da 370 * 15 = $ 5,550 a cikin dawowa. Ga duka ragowar kudaden shiga, mun cire kudaden shiga daga tallace-tallace kuma mun ƙare da 15000 - 5550 = $ 9450 a kudaden shiga. Amsar ita ce: 9450. 