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18 May, 02:59

If a microwave oven takes 12 seconds to cook 1 sandwich, 4 additional seconds to cook 2 sandwiches, and 1 additional second for every sandwich after that, how long does it take to cook 5 sandwiches at once?

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  1. 18 May, 03:22
    0
    19 seconds

    Step-by-step explanation:

    the first sandwich is 12 seconds and the next is an extra 4 which brings us to 16 than it takes 1 extra second and 1 times 3 is 3 and 16+3=19
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