The average age of 3 boys is 15yr their age ratio is3:5:7 what is the age of eldest boy
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let the ages be 3x,5x,7x
ATS
3x + 5x+ 7x /3= 15
15x / 3 = 15
x= 15×3 / 15
x= 3
therefore ages are 3×3=9
5×3=15
7×3=21
therefore,21 is the age of the eldest boy
ATS
3x + 5x+ 7x /3= 15
15x / 3 = 15
x= 15×3 / 15
x= 3
therefore ages are 3×3=9
5×3=15
7×3=21
therefore,21 is the age of the eldest boy
Anonymous:
hmmm..
nhi waise foreigners bahut achhe hote hai
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