GMAT Data Sufficiency (DS) | Four houses are on Block B; from east to west the houses belong to the

Four houses are on Block B; from east to west the houses belong to the Joneses, Smiths, Robinsons, and Jacksons. How far is it from the Joneses house to the Jacksons house?

(1) The distance from the Joneses' house to the Robinsons' house is 68 feet.
(2) The distance from the Smiths' house to the Jacksons' house is 75 feet.

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