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The number of seats in the first row of an auditorium is 18…

Jeff Miller October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that there are 18 seats in the first row of an auditorium and that in each row after the first there …
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If n + k = m, what is the value of k ?

Scott Woodbury-Stewart October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that n + k = m, and we need to determine the value of k. Since we know that n + …
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If Car X followed Car Y across a certain bridge that is 1/2…

Jeff Miller October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given that Car X follows Car Y across a bridge that is ½ mile long. We need to determine the time, in …
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What is the cube root…

Scott Woodbury-Stewart October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine the cube root of w. Thus, if we have a value for w, we can determine the value of the …
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If i and j are integers, is i + j an even integer?

Jeff Miller October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether i + j is an even integer. Remember: even + even = even odd + odd = even Thus, …
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Is x a negative…

Scott Woodbury-Stewart October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether x is a negative number. Statement One Alone: 9x > 10x We can subtract 9x from both sides of …
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Water is pumped into a partially filled tank at a constant…

Jeff Miller October 29, 2015
GMAT OFFICIAL GUIDE DS We are given that water is flowing into a tank through an inlet pipe and out of the tank through an outlet pipe. We need …
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In the xy -plane above, if the graph above line l is reflect…

Scott Woodbury-Stewart October 29, 2015
GMAT OFFICIAL GUIDE DS Solution: We are given a triangle in the coordinate plane, and we must determine whether angle QPR is a right angle. Remember that a right …
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