 
<translate> Tambayata ita ce: Greg ya ba wa 'yar'uwarsa Tessa kuɗi a lokatai da yawa. Greg ya rubuta dukan bashin 'yar'uwarsa a cikin littafin rubutu, a karo na farko da ya ba ta bashin $40. Bayan mako guda, Tessa ta biya rabin bashinta. Bayan 'yan kwanaki sai ta sake tambayarsa dala 10. Nawa ne har yanzu Tessa ke bin Greg bashi? Abin da kake tunani: <eng> 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: 