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A scientist recorded the number of eggs in each of 10 birds…

Jeff Miller October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are asked to determine the standard deviation of the number of eggs in 10 nests. Statement One Alone: The average (arithmetic mean) number …
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The average (arithmetic mean) price of the 3 items that Kate

Scott Woodbury-Stewart October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that Kate purchased 3 items from a store at an average price of $50. We are also given that there was …
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For the system of equations given, what is the value of z…

Jeff Miller October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given 3 equations: 1) x – 4 = z 2) y – x = 8 3) 8 – z = t We …
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The interior of a rectangular carton is designed by a certain

Scott Woodbury-Stewart October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that a rectangular carton has a length of 48 cm, a width of 32 cm, and a height of 15 cm. …
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The weights of all dishes of type X are exactly…

Jeff Miller October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that we have two types of dishes, dish X and dish Y, and each dish of each type has the same …
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If a and b are positive integers, is a/b < 9/11 ?

Jeff Miller October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether the product of positive integers AB is even. We must recall that the product of an even integer and …
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If t denotes the thousandths digit in the decimal representation…

Scott Woodbury-Stewart October 31, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that t denotes the thousandths digit of 0.43t7. We need to determine the value of t. Statement One Alone: If d …
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A circular tub has a band painted around its circumference…

Jeff Miller October 30, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given a cylinder with a shaded band painted around its circumference. We know that the height of the band is x meters, …
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