Answer:
20 hours.
Explanation:
Javier wants to take a vacation for which estimated cost is = $580
He has already saved money = $260
He makes per hour amount = $16
Let he will work to ensure the amount needed for vacations = x
Now the equation will be
16x + 260 + 580
16x = 580 - 260
16x = 320
x =
x = 20 hours
Javier needs to work for 20 hours.