Answer:
56 days
Explanation:
Total cars Johnson wants to make = 1500
Cars he has already made = 492
Cars left to make = 1500 - 492 = 1008
Give he can make 18 cars per day,
number of days = cars left to make ÷ 18 = 1008 ÷ 18 = 56
So it will take him 56 days to get to 1500 cars