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Mathematics, 15.12.2021 04:40 ericavasquez824

Two customers went to a post office to buy postcards and large envelopes. Each postcard costs the same amount, and each large envelope costs the same amount.

-> The first customer paid $24 for 28 postcards and 10 large envelopes

-> The second customer paid $49.60 for 20 postcards and 30 large envelopes

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