Lucky you, your neighbor has seven pets. Some are dogs, the rest are cats. Each dog eats five biscuits and each cat eats four biscuits. 32 biscuits in all are eaten by the seven pets. How many are dogs and how many are cats?
Answer:
4 dogs, 3 cats...........Each animal eats at least 4 biscuits. So the seven pets eat the first 28 biscuits, leaving 4. These must go, one each, to the dogs, since they eat five biscuits each.
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