marara13 marara13

15-09-2014
Mathematics

contestada

Please help this is urgent! :(

Emma is 3 times as old as Tara.
In another 7 years Emma will be twice as old as Tara will be.
Write at least one question and use algebra to find Emma's age now.

Respuesta :

15-09-2014

Whet is Emma's age?
x is Tara's age now
Emma is 3x
3x + 7 = 2(x+7)
3x + 7 = 2x + 14
x = 7
Emma is 7 years old and tara 21

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