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27 February, 09:09

On a class trip, there were 45 more girls than boys. the total number of students on the trip was 215. write and solve an equation to find the number of girls and boys on the class

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  1. 27 February, 10:22
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    (b) + (b+45) = 215

    b = # of boys

    there are 45 more girls than boys and 215 students total.

    minus 45 on both sides leaving you with

    (b) + (b) = 170

    combine like terms leaving you with

    2b=170

    divide both sides by 2

    b=85

    there were 85 boys

    85+45=130

    (the 45 for the # of girls more than boys)

    there were 130 girls.
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