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30 April, 13:16

There are 40 tables in a library, with 30% of them seating 4 people. The tables remaining only seat 22 people. How many seats are there in the library?

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Answers (2)
  1. 30 April, 15:11
    0
    30% of 40 = 0.30 (40) = 12 ... so 12 tables seat 4 people per table = 12 x 4 = 48 seats ... tables remaining seat 22 people (22 seats).

    48 + 22 = 70 seats total
  2. 30 April, 15:33
    0
    30% of 40 is

    30/100 times 40=

    3/10 times 40=

    120/10=

    12

    12 seat 4 people

    40-12=28 seating 22

    total seats=

    12*4+28*22=

    48+616=

    664

    664 seats
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