shauna2 shauna2

12-01-2016
Mathematics

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A number is 1/7 of another number. The difference is 18

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davidyangnyc davidyangnyc

12-01-2016

the difference of the two numbers is 6/7
18=6/7n
1/7n= 3
the first number is 3
the second number is 21

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12-01-2016

i guessed and checked, the two numbers are 3 and 21.
21-3=18
21/7=3

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