Solution Step 0/0
An animal lover has seven pets. Some are cats, the rest are dogs. Each dog eats five biscuits and each cat four biscuits. 32 biscuits in all are eaten. How many dogs and how many cats are there?
Explanations
The 7 pets are fed at least 4 biscuits each. This accounts for 28 biscuits, leaving 4 biscuits over. These can be distributed, one each, to 4 dogs. So there must be 3 cats. Or 7 pets in total.Check 2 dogs, 5 cats
Check 3 dogs, 4 cats
Check 4 dogs, 3 cats
Check 5 dogs, 2 cats
