जॉइन Examsbookउत्तर : 4. "7.5 hrs"
A can complete a piece of work in 12 days and B is 60% more efficient than A. In how many days B will complete the same work ?5
प्र: A can complete a piece of work in 12 days and B is 60% more efficient than A. In how many days B will complete the same work ?
- 18.7 hrsfalse
- 25.2 hrsfalse
- 35 hrsfalse
- 47.5 hrstrue
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उत्तर : 4. "7.5 hrs"
व्याख्या :
Answer: D) 7.5 hrs Explanation: Ratio of times taken by A and B = 160 : 100A can do the work in 12 daysLet B can do the work in "D" days=> 160:100 = 12 : D=> D = 12 x 100/160 = 7.5 hrs