Q. A mason can build a wall in 18 hours. After 9 hours he takes a break. What fraction of the wall is yet to be built?
A) 0.25
B) 0.9
C) 0.2
D) 0.5
✔ Correct Answer: 0.5
Exam Insight
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A) 0.25
B) 0.9
C) 0.2
D) 0.5
✔ Correct Answer: 0.5
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