The correct option is B 105,120, and 108
Let salaries of A, B, and C be Rs. x, y, and z respectively.
Together, their amount x+y+z=333.
Now,
Expenditure of A=80%
⇒ Savings =20%
Expenditure of B=85%
⇒ Savings =15%
Expenditure of C=75%
⇒ Savings =25%
∴ Savings of A=20x100, B=15y100, and C=25z100
Also, given savings are in the ratio 7:6:9
∴20x700=15y600=25z900
⇒20x7=15y6=25z9
Now, 20x7=15y6⇒8x=7y=x=7y8
And 15y6=25z9⇒9y10=z
Given, x+y+z=333
⇒78y+y+910y=333
⇒222y=333×80
⇒y=120
∴x=78(120)=105,z=910(120)=108
Hence, salary of A=Rs. 105, B=Rs. 120, and C=Rs. 108.