Mathematics, 31.08.2019 22:00 dondre54

Suppose stamps for postcards cost $0.28 and stamp for first class letter cost $0.44 diego wanted to send postcards and and letter to 10 friends if he had 3.60 for stamps and spends all of it how many postcards and how many letters could he send

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Suppose stamps for postcards cost $0.28 and stamp for first class letter cost $0.44 diego wanted to...