the mean ages of 3 students is 21 yrs. if the ratio of their ages is 2:3:4. then find the ages of the students
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2x+3x+4x/3=21
9x/3=21
3x=21
x=7
the ages r 2x=14,3x=21,4x=28.hope it helps u
9x/3=21
3x=21
x=7
the ages r 2x=14,3x=21,4x=28.hope it helps u
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