Question

10) There are 20 animals in the field. Some are horses and some are ducks. There are 70

legs in all. How many of each animal are in the field?
The answer

Answer 1

5 ducks 15 horses

Explanation:

x+y=20

2x+4y=70

y=20-x

2x+4(20-x)=70

2x+80-4x=70

-2x=-10

x=5 y=15

Answer 2

Answer: the answer is 32 legs

Explanation: