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Aptitude · Q169

Time And Work

Competitive Exams · Aptitude · question 169

Q169

A can do a piece of work in 70 days and B is 40% more efficient then A. Then the number of days taken by B to do the same work is = ?

A.
40 dayd
B.
60 days
C.
50 days
Answer
D.
45 days

Answer: Option C

Solution

Answer: Option C
Solution:
  A   :   B
Efficiency →   100% : 140%
  5 : 7
     
Time 7 : 5
  ×10↓   ↓×10
Actual Time   70 days   50 days