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22-12-2018
Mathematics

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Jim is 9 years old and Katy is 6 years younger than jim, in how many years will Jim be twice as old as Katy

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alicefung411 alicefung411

22-12-2018

Katy : 8 - 6 = 3 years old
After o years
9+o = 2(3+o)
4.5+0.5o = 3+o
0.5o = 1.5
o = 3
so the answer is in 3 years

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