math

The data shown below shows the number of students in a school.

Std 1 - 25 students

std 2 - 20 students

std 3 - 18 students

std 4 - 17 students,

If the school has 27 (2) seaters to seat all the students in the classes, how many (2) seaters are needed to seat all the students?

* two seaters a desk for two children to sit in.

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  1. (25 + 20 + 18 + 17)/2 = ?

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    Ms. Sue
  2. No fair, can not cut two person desk in half :)
    Please check my reply below.

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  3. (25 + 20 + 18 + 17)/2 = 80 / 2 = 40

    40 - 27 = 13 more two-seaters needed

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    Ms. Sue
  4. I got 14

    13 + 10 + 9 + 9 = 41

    41 - 27 = 14

    25/2 = 13
    17/2 = 9
    for two seaters

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  5. Ahh -- I see the problem. You're right, as usual, Damon. Thanks for clearing this up.

    Although the total is 80 students, there are odd numbers of students in two classrooms.

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    Ms. Sue

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