Hartley has 4 puppies that each weigh 7.5 kilograms. The rescue center has 14 cats that each weigh 2.5 kilograms. How many kilograms more do the cats weigh than the puppies?
Puppies = 4 * 7.5 = <<4*7.5=30>>30 kg
Cats = 14 * 2.5 = <<14*2.5=35>>35 kg
35 - 30 = <<35-30=5>>5
The cats weigh 5 kg more than the puppies.
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