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 has lasted 2 more days, the average number of cars sold per day would have increased by 3.
2) On exactly 9 days during the event, the number of cars for the day is a multiple of 9.
OA E
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 has lasted 2 more days, the average number of cars sold per day would have increased by 3.
2) On exactly 9 days during the event, the number of cars for the day is a multiple of 9.
OA E
