There are 2 times as many hamsters as pigeons.
There are 60 legs altogether.
- Find the number of animals.
- Find the number of less hamsters than pigeons.
- How many more hamsters' legs are there than pigeons' legs?
| |
Hamsters |
Pigeons |
Total |
Difference |
| Number (Animals) |
2 u |
1 u |
3 u |
1 u |
| Value (Legs) |
4 |
2 |
|
|
| Total value (Total legs) |
8 u |
2 u |
10 u |
6 u |
$
Choose the animal type with a smaller number to be 1 u.
Let the number of pigeons be 1 u.
Number of pigeons = 1 u
Number of hamsters = 2 u
Number of pigeons' legs = 2 x 1 u = 2 u
Number of hamsters' legs = 4 x 2 u = 8 u
Total number of legs
= 8 u + 2 u
= 10 u
10 u = 60
1 u = 60 ÷ 10 = 6
(a)
Number of animals
= 2 u + 1 u
= 3 u
= 3 x 6
= 18
(b)
Number of less hamsters than pigeons
= 2 u - 1 u
= 1 u
= 1 x 6
= 6
(c)
Number of more hamsters' legs than pigeons' legs
= 8 u - 2 u
= 6 u
= 6 x 6 = 36
Answer(s): (a) 18; (b) 6; (c) 36
