math

At the movie theatre, child admission is
$5.30
and adult admission is
$8.70
. On Friday,
155
tickets were sold for a total sales of
$1137.70
. How many child tickets were sold that day?

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  1. number of children --- c
    number of adults ---- 155-c
    5.3c + 8.7(155-c) = 1137.7
    5.3c + 1348.5 - 8.7c = 1137.7
    -3.4c = -210.8
    c = 62

    So 62 children tickets were sold on Friday

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