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1. Nikki is 25% more efficient that Tina. Tina alone can build a craft in 20 days. Find the number of days taken by Nikki to finish the same piece of work ?
- A. 16
- B. 16
- C. 16
- D. 16
Answer: Option A
Explanation:
The ratio of times taken by Tina and Nikki = 125: 100 = 5: 4.
Suppose Nikki takes x days to do the work.
5 : 4 = 20 : x
so, x = (4x20)/5 = 16 days
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