Some hens and donkeys are in a farm. These animals have a total of 19 heads and 60 legs.
- How many donkeys are there?
- How many hens are there?
Number of
donkeys |
Number of
donkeys' legs |
Number of
hens |
Number of
hens' legs |
Total legs |
19
|
19 x 4
= 76 |
0
|
0
|
76 |
18
|
18 x 4
= 72 |
1
|
1 x 2
= 2 |
74
|
| 11 |
11 x 4
= 44 |
8
|
8 x 2
= 16 |
60
|
Number of legs if all are donkeys
= 19 x 4
= 76
Big difference between the number of legs of the donkeys and the hens
= 76 - 60
= 16
Small difference between the number of legs of one donkey and one hen
= 4 - 2
= 2
Numbers of hens
= 16 ÷ 2
= 8
(b)
Number of donkeys
= 19 - 8
= 11
Answer(s): (a) 8; (b) 11
