Mr. Santana is 3 times his daughter
Kara's age. Ten years ago, Mr. Santana
was 7 times Kara's age. Which system
of equations could you solve to find Mr.
Santana's current age?
A 3f=d
f-10=7d - 10
B f=3d
f+ 10 = 7(d + 10)
C f= d/3
f+ 10 = 7d - 10
D f=3d
f-10 = 7(d - 10)