Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now?
2 answers:
Let the age of the Jane be
So age of Helen = + 8
Twenty years ago,
Age of Jane = - 20
And age of Helen = + 8 - 20 = - 12
Helen was three times as old as Jane
- 12 = 3 ( - 20)
- 12 = 3 - 60
Add - 3 on both sides,
- 3 - 12 = 3 - 3 - 60
-2 - 12 = - 60
Add 12 on both sides
-2 - 12 + 12 = - 60 + 12
-2 = - 48
Divide both side by -2
= 24
Age of Jane = 24 yrs
Age of Helen = 32 yrs
Helen is 16 and Jane is 8
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