Let income of Aswath =12x, Income of Sunita =9x, Income of Ramdin =7x Expenditure of Aswath =15y, Expenditure of Sunita =9y, Expenditure of Ramdin =8y According to the question, Aswath save 25% of his income 12x−15y=12x×
25
100
⇒12x−15y=
12x
4
=3x ⇒12x−3x=15y ⇒
x
y
=
15
9
⇒
5
3
=
x
y
Savings of Aswath =12x−15y =12×5−15×3 =60−45=15 Savings of Sunita =9x−9y ⇒=9×5−9×3 ⇒=45−27=18 Savings of Ramdin =7x−8y ⇒=7×5−8×3 ⇒=35−24=11 Ratio of savings =15:18:11