> "If a machine can produce 2 cars in 10 minutes, how long does it take to produce 3 cars?" This question is also ambiguous, because there is no info about how

> "If a machine can produce 2 cars in 10 minutes, how long does it take to produce 3 cars?" This question is also ambiguous, because there is no info about how long the operation takes, e.g. the machine may be parallelized and produce a 3rd car in 10 minutes along with the 2 others or that the machine may obey a non-linear increase in production time per unit.