Q. If a train leaves a station heading north at 60 km/h and another train leaves the same station heading south at 80 km/h, how far apart will they be after 2 hours?
A.140 km
B.160 km
C.120 km
D.100 km
Solution
In 2 hours, the first train travels 120 km (60 km/h * 2) and the second train travels 160 km (80 km/h * 2). The total distance apart is 120 km + 160 km = 280 km.
Q. If all cats are animals and some animals are not dogs, can we conclude that some cats are not dogs?
A.Yes
B.No
C.Cannot be determined
D.Only if specified
Solution
Since all cats are animals and some animals are not dogs, it follows that those cats that are part of the animals that are not dogs can be concluded as not being dogs.