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Abby is half as old as her dad and as twice as old as her brother. if her brother is 9 years old how old is her dad?
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1 vote
Abby is half as old as her dad and as twice as old as her brother. if her brother is 9 years old how old is her dad?

User Sichinumi
by
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2 Answers

2 votes
Let Abby's father's age be x.
Then Abby's age = 1/2 x or her father's age= 2* Abby's age
Abby's brother's age = 9 years
So, Abby's age= 2*9= 18 years
∴ her father's age = 2*18 =36 years
User Jjhelguero
by
6.0k points
4 votes
A=D/2
A=2B
B=9
A=2 (9)
A=18
18=D/2
*2 both sides
D=36
User Mtsahakis
by
6.2k points
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