$190-30=160$  $40+40+40+40=160$  $4+1=5$ 
Mom has $190$ coins in total and wants to give them to Sana as the pocket money. She gives Sana $30$ coins for the first month, and $40$ coins for each of the following months. How many months in total can Sana get the pocket money? 

  - $$3$$ 
  - $$4$$ 
  - $$5$$ 
  - $$6$$ 
  - $$7$$ 