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19 October, 02:06

The cost of 6 sandwiches and 4 drinks is $53. The cost of 4 sandwiches and 6 drinks is $47 how much does one sandwich cost

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  1. 19 October, 03:34
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    Let sandwiches and drinks be s and d resp so according to the question,

    by 1st case,

    6s + 4d = 53

    or, d = (53-6s) / 4

    again by 2nd case,

    4s + 6 d = 47

    4s + 6 (53-6s) / 4 = 47

    or, (8s + 159-18s) / 2=47

    or 159-10s = 94

    or 65 = 10s

    or, s = $6.5
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