antfreixo100 antfreixo100

12-09-2016
Mathematics

contestada

In 18 years, Jenny will be three times as old as she is now. How old is she?

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MathGeek289 MathGeek289

12-09-2016

We Should First Change This Into An Equation.
3j = j+18
We Meed To Combine Like Terms.
-j from both sides.
2j = 18
Divide.
J = 18/2
18/2 = 9
J = 9..

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Cookiewolf43213 Cookiewolf43213

12-09-2016

i believe the answer is 6

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