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January 30, 2015

January 30, 2015

Posted by **srihita** on Monday, March 26, 2012 at 6:43am.

- maths -
**Steve**, Monday, March 26, 2012 at 12:29pmr = 4/9 y

r = 2/3 (y-21)

4/9 y = 2/3 (y-21)

4/9 y = 2/3 y - 14

2/9 y = 14

y = 63

r = 28

check:

63-21 = 42.

28 = 2/3 of 42

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