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Math

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The mean height of 20 boys and 14 girls is 161 cm. If the mean height of the 14 girls is 151 cm, calculate the mean height of the 20 boys.

  • Math -

    161*20+14=x
    161*34= x. 5474cm=x
    14*15=2114cm
    5474-2114=3360
    Height of boys = 168 cm

  • Math -

    The Total height of 34 children = 161 x 34 = 5474 cm. Height of 14 girls =
    14 x 151 = 2114-5474 heightt of 20 boys = 3360/20 mean heightt of boys
    = 168.

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