 <translate> My question is: Greg has lent his sister Tessa money on several occasions. Greg writes down all of his sister's debts in a notebook, the first time he lent her $40. A week later, Tessa paid him back half of her debt. A few days later she asked him for $10 more. How much does Tessa still owe Greg? Your thoughts: <yor> Ìbéèrè mi ni pé: Greg ti yá arábìnrin rẹ̀ Tessa lówó ní ọ̀pọ̀ ìgbà. Greg kọ gbogbo gbèsè arábìnrin rẹ̀ sínú ìwé kan, ìgbà àkọ́kọ́ tó yá a ní ogójì dọ́là. Ní ọ̀sẹ̀ kan lẹ́yìn náà, Tessa san ìdajì gbèsè tó jẹ ẹ́ padà. Ọjọ́ díẹ̀ lẹ́yìn náà ló tún béèrè owó dọ́là mẹ́wàá sí i lọ́wọ́ rẹ̀. Owó wo ni Tessa ṣì jẹ Greg? Ohun tó o rò: 