- A35
- B70
- C31
- D39
Step-by-Step Solution
The 5 rung lengths form an AP from 25 to 45. The middle term = average = cm.
Answer: A) 35
A ladder has rungs spaced equally. The bottom rung is 25 cm long and the top is 45 cm. If there are 5 rungs in all, how long is the middle (3rd) rung?
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