Question 182295
let T+6=Betty's present age
T=Theresa's present age.

Three years ago, Betty's age was four times Teresa's age. 3 years ago, betty was (t+6)-3=t+3 years old while Theresa was t-3 years old.

t+3=4(t-3)
t+3=4t-12
3=3t-12
15=3t
t=5>>theresa's age

betty's age=t+6=5+6=11

Therefore, Betty is 11 years old while Betty is 11 years old.

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