Some geese and donkeys are in a farm. These animals have a total of 16 heads and 52 legs.
- How many donkeys are there?
- How many geese are there?
Number of donkeys |
Number of donkeys' legs |
Number of geese |
Number of geese' legs |
Total legs |
16
|
16 x 4 = 64 |
0
|
0
|
64 |
15
|
15 x 4 = 60 |
1
|
1 x 2 = 2 |
62
|
10 |
10 x 4 = 40 |
6
|
6 x 2 = 12 |
52
|
Number of legs if all are donkeys
= 16 x 4
= 64
Big difference between the number of legs of the donkeys and the geese
= 64 - 52
= 12
Small difference between the number of legs of one donkey and one goose
= 4 - 2
= 2
Numbers of geese
= 12 ÷ 2
= 6
(b)
Number of donkeys
= 16 - 6
= 10
Answer(s): (a) 6; (b) 10