A boy is aged 4 years today. His sister is 3 times as old as him. When the boy is 12 years of age, how old would be the sister?
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when the boy was 4 year his sister age is 3 times his age
his sister's age is 4(3)=12
after 8 years his sister age is 20 years
his sister's age is 4(3)=12
after 8 years his sister age is 20 years
rupalavanya1981:
after 8 years his sister age is 20 years
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