human
A used car lot has 24 cars and motorcycles (in total) for sale. A third of the vehicles are motorcycles, and a quarter of the cars have a spare tire included. How many tires are on the used car lot’s vehicles in all?
assistant
How many motorcycles are there? ** The used car lot has 24 / 3 = <<24/3=8>>8 motorcycles with 2 tires each.
How many cars are there? ** The lot has 24 - 8 = <<24-8=16>>16 cars for sale
How many cars have a spare tire? ** There are 16 / 4 = 4 cars with a spare tire with 5 tires each.
How many cars have 4 tires? ** The lot has 16 - 4 = <<16-4=12>>12 cars with 4 tires each.
How many tires are on the used car lot’s vehicles in all? ** Thus, the used car lot’s vehicles have 8 * 2 + 4 * 5 + 12 * 4 = 16 + 20 + 48 = <<8*2+4*5+12*4=84>>84 tires in all.
#### 84