Question

There are 13 animals in the barn. Some are chickens and some are pig's. There are 40legs in all. How many of each animal are there?

Answer 1

Answer:

• 7 pigs
• 6 chickens

Step-by-step explanation:

If all were chickens, there would be 26 legs. There are 14 legs more than that. Each pig contributes 2 additional legs, so there must be 14/2 = 7 pigs. The remaining 6 animals are chickens.

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Check

7×4 + 6×2 = 28 +12 = 40 . . . . total legs