------------------------------------- Define x : ------------------------------------- Let x be the number of weeks needed.
------------------------------------- Navor : ------------------------------------- <span>Navor has $800 and is spending $30 per week: </span>800 - 30x
------------------------------------- Rashid : ------------------------------------- <span>Rashid has $150 and is saving $20 per week: </span>150 + 20x
-------------------------------------------------------------------------------------------------------- Answer: They will have the same amount of money after 13 weeks. ---------------------------------------------------------------------------------------------------------