75 Metres.

Second house is 35m from the First;
Third house is  25m from the Second;
Fourth is 15m from the Third.

Thus,
Third house is 35 + 25 = 60m from the First;
Fourth is 25 + 15 = 40m from the Second and
Third at 15m from Fourth is 10m nearer than to the Second which is at 25m.

John is 72 yrs and Jacob is 27 yrs old.

72 – 27 = 45

Only the house numbers of Rachel (House A) and Chandler (House E) can be determined precisely from the given facts.
Numbers of houses B, C and D can be any of 4, 9 and 35, in any order.   (sum = 48, Product = 1260)

Depends on what is meant by “10% discount over and over again“. A 65% discount on base price of 70,000 amounts to a discount of 45,500/-, which is better than the 45,000/- discount offer. Now, whether this is the best or not depends on what is “10% discount over and over again“.

One possible solution is 23.

CRY over spilt (split?) MILK

Of the daughters who shared Rs. 3960, Tanu got 1220, Priyanka got 1320 (100 more than Tanu) and Neha got 1420 (100 more than Priyanka)

The remaining Rs. 6040 was divided among the husbands as 1220, 1980 and 2840, received by Tushar, Prashant and Pramod respectively.

As per the details given, Tanu is married to Tushar (who got same amount as his wife)
while Priyanka is married to Prashant who got 50% more than his wife and
Neha is married to Pramod (who got twice as much as his wife.)

123

123 – 2 = 121 = 11²
123 + 2 = 125 = 5³

Here we go…

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A one km long cloth will have 100 pieces of 10m each. To get 100 pieces, it requires 99 cuts, which will take, at 4 seconds per cut, 4 x 99 = 396 Sec. (6 min. 36 Sec.)