Question

Bisi and fibie ages add up to 29 seven years ago bisi was twice as old as fibie find their present ages

Answer 1

B's current age ---- x
F's current age ---- 29-x

7 years ago:
B's age = x-7
F's age = 29-x - 7 = 22-x

x-7 = 2(22-x)

solve for x , and sub into my definitions

Answer 2

Looks like they used the same textbook back in 2011
https://www.jiskha.com/display.cgi?id=1321919895