Asked by Nikki

Rosa is 14 years older than her sister amy. Three years ago, she was three times as old as amy. how old is each girl now?
Answered by Reiny
ages now:
Amy --- x
Rosa --- x+14

Three years ago:
Amy --- x-3
rosa ---- x+11

x+11 = 3(x-3)
x+11 = 3x - 9
2x = 20
x = 10

sub into my definitions
Answered by Bosnian
R = Age of Rosa

A = Age of Amy


Rosa is 14 years older than her sister Amy.

R = A + 14

Three years ago, she was three times as old as amy

Three years ago, Rosa and Amy was 3 years younger so.

R - 3 = 3 ( A - 3 )

Replace R with A + 14

A + 14 - 3 = 3 ( A - 3 )

A + 11 = 3 A - 3 * 3

A + 11 = 3 A - 9 Add 9 to both sides

A + 11 + 9 = 3 A - 9 + 9

A + 20 = 3 A Subtract A to both sides

A + 20 - A = 3 A - A

20 = 2 A Divide both sides by 2

20 / 2 = 2 A / 2

10 = A

A = 10


R = A + 14

R = 10 + 14

R = 24


Rosa is 24 year old

Amy is 10 year old


Answered by Anonymous
three times Rosa’s age in 5 years if she is x years old today
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