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GMAT Exam
Daniel: Historically, railroads substantially altered the course of the United States economy, enabling the country to enjoy unprecedented growth in the nineteenth century.
Robert: It's true that growth required cheap inland transportation, which railroads provided. But with government support similar to the massive land grants that subsidized rapid railroad expansion, canals and roads could have had the same effect.
Which of the following is most likely a point that Robert believes is at issue between Daniel and himself?

The artist has correctly determined that to make the largest possible square grid from the available tiles, she must use all of the except for those in the group of X tiles. Moreover, if she uses all of the tiles except for those in the group with X tiles and those in the group with Y tiles, she could make a smaller square grid.
select for X for Y the values that are consistent with the information provided. Make only two selections, one in each column.

Pete made a trip to the beach, of which 80 kilometers were on highway X. What was Pete’s average speed for the trip?
(1)
Pete’s average speed for the part of the trip on highway X was 80 kilometers per hour.
(2)
Pete’s average speed for the part of the trip not on highway X was 96 kilometers per hour.