Question
The total mass of Ahmad and Ryan is 57 kg. The total mass of Ryan and Perry is 55.2 kg. If the total mass of Ahmad and Perry is 56 kg, find the mass of Perry.
4 m

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The total mass of Ahmad and Ryan is 57 kg. The total mass of Ryan and Perry is 55.2 kg. If the total mass of Ahmad and Perry is 56 kg, find the mass of Perry.