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There is a total of 20 quarters stacked in four piles. The first pile has 3 fewer than the second pile. The second pile has 2 more than the third pile. The fourth pile has twice as many as the second pile. How many quarters are in the fourth pile?

 Jun 1, 2020
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Let the the 3rd pile =T
The 2nd pile =T + 2
First pile =[T - 1]
Fourth pile =2[T + 2]
T + T + 2 + T - 1 + 2T + 4 =20, solve for T
5T  + 5 = 20
5T = 15
T =3 quarters - 3rd pile
3+2 =5 quarters- 2nd pile
3-1 =2 quarters- 1st pile.
5 x 2=10 quarters - 4th pile

 Jun 1, 2020

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