- A42
- B35
- C7
- D28
Step-by-Step Solution
Meena's rate = 1/14 − 1/21 = (3 − 2)/42 = 1/42 of the wall per day, so she needs 42 days.
Answer: A) 42
Ritu and Meena together can paint a wall in 14 days, while Ritu alone needs 21 days. How many days would Meena take to paint it by herself? (answer in days)
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