 <translate> He buys them for 12 * .75 = $9. He sells them for 12 * 1.5 = $18. So he makes 18 - 9 = $9 per day. That means he makes 9 * 7 = $63 per week.
The final answer: 63. <yor> Ó rà wọ́n ní 12 *.75 = $9. Ó tà wọ́n ní 12 * 1.5 = $18 Nítorí náà, ó ń rí 18 - 9 = $9 lójúmọ́. Ìyẹn túmọ̀ sí pé ó ń gba $63 lọ́sọ̀ọ̀sẹ̀. Ìdáhùn tí wọ́n fún un níkẹyìn ni pé: 63. 