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Step 1: Understand the problem

The four houses are arranged in a straight line from east to west:
Joneses – Smiths – Robinsons – Jacksons

We need to determine the total distance from the Joneses' house to the Jacksons' house.

Step 2: Analyze Statement (1)

(1) The distance from the Joneses' house to the Robinsons' house is 68 feet.
This means:
(Joneses to Smiths) + (Smiths to Robinsons) = 68 feet

However, we do not know the distance from Robinsons to Jacksons.
Statement (1) alone is insufficient.

Step 3: Analyze Statement (2)

(2) The distance from the Smiths' house to the Jacksons' house is 75 feet.
This means:
(Smiths to Robinsons) + (Robinsons to Jacksons) = 75 feet

However, we do not know the distance from Joneses to Smiths.
Statement (2) alone is insufficient.

Step 4: Combine both statements

From (1):
(Joneses to Smiths) + (Smiths to Robinsons) = 68 feet

From (2):
(Smiths to Robinsons) + (Robinsons to Jacksons) = 75 feet

Adding both equations:
(Joneses to Smiths) + (Smiths to Robinsons) + (Smiths to Robinsons) + (Robinsons to Jacksons) = 143 feet

Since (Smiths to Robinsons) is counted twice, we cannot separate the individual distances.
Thus, we cannot determine the total distance from Joneses to Jacksons.

Final Answer: E (Statements together are insufficient).
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? = Joneses house to the Jacksons house? = Joneses - Jacksons

(1) The distance from the Joneses' house to the Robinsons' house is 68 feet.
68 = Joneses' - Robinsons'; Not Sufficient since there can't be any relation with Jacksons

(2) The distance from the Smiths' house to the Jacksons' house is 75 feet.
75 = Smiths' - Jacksons'; Not Sufficient since there can't be any relation with Joneses

With these two also there isn't any relation between the two subjects, NS
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