The ratio of the efficiencies of two workers, A and B, is 7 : 2. If A can complete a project in 13 days, how many days will B take to complete the same project alone?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. days.
Ratio (efficiency) of A and B = 7 : 2
Ratio (time) of A and B = 2 : 7
Time required for A = 13 days
Time required for B = (13/2) × 7 = days