Question

Boris was 26 years old in 1970, when his daughter, Olga, was born. In what year was Boris exactly 3 times as old as Olga?

Answer 1

boris age=B
olgas age = C

(B+x)=3(C+x)
B=26 C=0
26+x=0+3x
26=2x
x=13

so 1970+13=1983