Bunuel wrote:

A car dealership sold exactly 200 vehicles in each quarter of last year. If 23% of the vehicles in Q1 were trucks, 15% of the vehicles in Q2 were trucks, 25% of the vehicles in Q3 were trucks, and 25% of the vehicles for the year in total were trucks, how many trucks were sold in Q4?

A. 68

B. 70

C. 72

D. 74

E. 76

Q1 - 23% were trucks ie 46 Trucks (double the number)

Q2 - 15% were trucks ie 30 Trucks (double the number)

Q3 - 25% were trucks ie 50 Trucks (double the number)

Total trucks that year 25% of 200*4 is 200 Trucks

So, Trucks in Q4=200-46-30-50 which is 74 Trucks.