What is the distance covered to pick up the second potato and drop it in bucket ?

Checks whether the 3 m gap between potatoes is correctly added before doubling for the return trip, revealing the AP's common difference.

Concept

• Second potato lies 3 m further than the first, so its one-way distance is $5 + 3 = 8\text{ m}$; the round trip doubles this.
• Comparing 16 m (2nd potato) to 10 m (1st potato) gives common difference $d = 6\text{ m}$, since the 3 m gap is doubled on both legs.

Key Points

• One-way distance to 2nd potato = 8 m; round trip = 16 m.
• AP so far: $10, 16, \ldots$ with $d = 6\text{ m}$.

Common Mistakes

• Adding the 3 m gap only once instead of accounting for both the outward and return legs.
• Confusing the one-way gap (3 m) with the round-trip common difference (6 m).