a) 5s
b) 4s
c) 6s
d) 2s
Answer: b
Explanation: 3 + 7 + 11 + 15 + . . . . . (1)
1 + 9 + 17 + 25 + . . . . . (2)
The condition is satisfied for the 4 seconds in 2nd journey, ant covered 17m more than 1st one.
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