A is 30% more efficient than B. How much time will they take together to complete a job which A alone can finish in 23 days? MCQ with Answer and Explanation
A is 30% more efficient than B. How much time will they take together to complete a job which A alone can finish in 23 days?
A. 14 days
B. 13 days
C. 11 days
D. 12 days
Answer: Option B
Solution (By JKSSB Mock Tests)
Let efficiency of B = 10, then efficiency of A = 13. Total work = Efficiency of A * Time taken by A = 13 * 23 = 299 units. Combined efficiency of A and B = 13 + 10 = 23. Time taken together = 299 / 23 = 13 days.
A and B together can do a piece of work in 8 days, B and C together in 12 days, and C and A together in 16 days. In how many days can A, B and C together finish the work?
No comments yet. Be the first to start the discussion!