Respuesta :
It would take christian 9 weeks to save the rest of the money.
189-99 =90 (take away the money he has saved already from the goal to see how much money he needs.
90 ÷ 10 = 9
189-99 =90 (take away the money he has saved already from the goal to see how much money he needs.
90 ÷ 10 = 9