Answer:
2 more cages
Explanation:
A pair of guinea pigs means , 2 guinea pigs per cage
If the pet store has 8 cages how many more cages will the pet store need?
For 8 cages
1 cage = 2 guinea pigs
8 cages = x
Cross Multiply
x = 8 × 2 guinea pigs
x = 16 guinea pigs
The pet store has 20 guinea pigs
The amount of guinea pigs left
= 20 - 16
= 4 guinea pigs
2 guinea pigs = 1 cage
4 guinea pigs = x
Cross Multiply.
2x = 4
x = 4/2
x = 2 cages
Therefore, the pet store needs 2 more cages