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01-11-2018
Mathematics

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Janine is twice as old as your brother Mark if the sum of their ages of 24 how old is Janine

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shirukaza shirukaza

08-11-2018

J = 2*M J=Janine, M=Mark

J+M=24

2*M+M=24

3M=24

3M/3=24/3

M=8

2*8=J

J=16

Janine is 16.

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