Join ExamsbookAnswer : 3. "7 ½ days"
A can do a certain job in 12 days. B is 60% more efficient than A. The number of days, it takes B to do the same piece of work is ………5
Q: A can do a certain job in 12 days. B is 60% more efficient than A. The number of days, it takes B to do the same piece of work is ………
- 16 daysfalse
- 26 ¼ daysfalse
- 37 ½ daystrue
- 48 daysfalse
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Answer : 3. "7 ½ days"
Explanation :
A--12 days
A:B=100:160=5:8 this the speed ratio
So we can found total work=Speed*time=5*12=60
so that B can do this work in time=Total work/speed=60/8
option C is your answer