If 147 people attend a concert and tickets for adults cost 2.50 while tickets for children cost 1.50 and total receipts for the concert was

Question

If 147 people attend a concert and tickets for adults cost 2.50 while tickets for children cost 1.50 and total receipts for the concert was297.50 how many of each went to the concert

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Trung Dũng 4 years 2021-08-18T20:39:40+00:00 1 Answers 15 views 0

Answers ( )

  1. Ladonna
    0
    2021-08-18T20:41:15+00:00
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    Answer:

    Step-by-step explanation:

    a + c  = 147

    2.50a + 1.50c = 297.50

    -2.50a – 2.50c = -367.50

     2.50a + 1.50c = 297.50

       -c = -70

     c = 70 children

    a + 70 = 147

    a = 77 adults

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )