The average age of boys is twice the number of girls in a class. If the ratio of boys and girls in the class of 36 is 5:1, What is the total

Question

The average age of boys is twice the number of girls in a class. If the ratio of boys and girls in the class of 36 is 5:1, What is the total ages (in year) of the boys in class?

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Caroline 3 weeks 2021-08-18T10:09:32+00:00 2 Answers 0 views 0

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    0
    2021-08-18T10:11:07+00:00

    Answer:

    answer is 360 years

    Step-by-step explanation:

    let the no. of boys be 5x,

    and no. of girls be x

    A.T.Q.

    5x + x = 36

    6x = 36

    x = 36 ÷ 6

    x = 6

    therefore , total number of girls = x = 6

    and , total number of boys = 5x = 5 × 6 = 30

    As it is given that the age of 1 boy is twice the number of total girls…

    therefore , age of 1 boy = 2 × 6 = 12 years

    and there are 30 such boys…

    so , total average age of boys = 12 × 30 = 360 years

    HOPE THIS ANSWER WILL HELP YOU ALL!!

    0
    2021-08-18T10:11:09+00:00

    Answer:

    360

    Step-by-step explanation:

    Lets take the no.of boys and girls respectively as 5x and x

    5x+x=36

    =6x=36

    =x=6

    so therefore no.of boys and girls respectively are 30 and 6.

    Lets take the average age =y

    y=2x

    y=12

    since average = Total of ages/no.of students

    12=total ages/30

    360=total ages(in year )

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