 
<translate> 100 *.8 = 80 abokan ciniki sun sayi wani abu. Wannan yana nufin sun kai darajar 80 * 25 = $2000. Don haka ya samu 2000 - 1000 = $1000 daga tallan. Amsar ƙarshe: 1000. <eng> 100 * .8 = 80 customers bought something. That means they were worth 80 * 25 = $2000. So he gained 2000 - 1000 = $1000 from the ad. The final answer: 1000. 