Question

A man is 47 years old, and his sister is 43 years old. How many years ago was it when the man was twice as old as his sister?

Answer 1

difference=4
47-x=2(47+4)+x
47+x=102-x
2x=55
x=27.5

Answer 2

Answer:

Step-by-step explanation: 47-x=2(43-x)

=>47-x=86-2x

=>x=39

Hence, 39 years ago from now, the man was twice as old as his sister.