Answer: 50 m.
- A 30 m
- B 35 m
- C 40 m
- D 50 m
Correct answer: D. 50 m
Explanation: Total distance = 10 + 2 × [10 × (3/5)/(1-3/5)] = 10 + 2 × [6/(2/5)] = 10 + 2 × 15 = 40. Wait: 10 + 2 × [6+18/5+...] = 10 + 2 × 6/(1-3/5) = 10 + 2×15 = 40.
Bar heights for AP 2, 5, 8, 11 with the common difference d=3 marked between consecutive terms.
Concept context
Arithmetic progressions, geometric progressions, and sums