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January 26, 2015

January 26, 2015

Posted by **Chelsy** on Tuesday, November 27, 2012 at 11:07am.

2,000 grams

2,100 grams

2,200 grams

2,300 grams

2,700 grams

- CALCULUS -
**Anonymous**, Tuesday, November 27, 2012 at 11:21amSn = n/2 (a+a+(n-1)d)

If Tn is the nth term,

S10 = 5(a+T10)

13000 = 5(400+T10)

T10 = 2200

The heaviest book is 2200g

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