Question: A zoo is arranging the layout of its animal enclosures. There are 4 tiger enclosures in a row and behind each of these are 2 zebra enclosures. There are three times as many giraffe enclosures as zebra enclosures scattered around the zoo. The tiger enclosures hold 4 tigers, the zebra enclosures hold 10 zebras and the giraffe enclosures hold 2 giraffes. If these are the only animals in the zoo, how many animals are in the zoo? Think carefully first, then make a decision:
There are twice as many zebra enclosures, so there must be 4 tiger enclosures * 2 = 8 zebra enclosures. This means there are 8 zebra enclosures * 3 = 24 giraffe enclosures. In the tiger enclosures, there are 4 tiger enclosures * 4 = 16 tigers. In the zebra enclosures, there are 8 zebra enclosures * 10 zebras = 80 zebras. In the giraffe enclosures, there are 24 giraffe enclosures * 2 giraffes = 48 giraffes. So in total, there are 16 tigers + 80 zebras + 48 giraffes = 144 animals in the zoo. So the answer is 144.