Question

3 लडकिया की औसत आयु 20 वर्ष है उनकी आयु का अनुपात 3:5:7 है सबसे छोटी लडकी की आयु ऋत कीजिए

Answer 1

12 is the right answer..... i hope it helps you.. please mark me as brainlist

Answer 2

let the common ratio be 3x 5x and 7x
according to question (3x+5x+7x)/3=20
15x/3=20
x=20/5=4
age of smallest girl=3x=3*4=12years
hope it helps!!!
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