When Janice is 20 years old; her brother is half her age. When Janice is 30 years old; how old is her brother?
2 answers:
When Janice was 20, her brother was 10.
Since the age between them will always be 10 years,
30-10= 20
When Janice is 30, her brother is 20.
I hope this helps!
~cupcake
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