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Manhattan Prep
A new electric car company holds a limited-time sales event. On the first day, 3 cars are sold. On each subsequent day of the event, 3 more cars are sold than on the previous day. For how many days does the event last?
1) If the event had lasted 2 more days, there would have been 84 more cars sold on the last day of the event than on the first.
2) On exactly 9 days during the event, the number of cars for the day is a multiple of 9.
OA A
A new electric car company holds a limited-time sales event. On the first day, 3 cars are sold. On each subsequent day of the event, 3 more cars are sold than on the previous day. For how many days does the event last?
1) If the event had lasted 2 more days, there would have been 84 more cars sold on the last day of the event than on the first.
2) On exactly 9 days during the event, the number of cars for the day is a multiple of 9.
OA A
