Question

The ratio of working efficiencies of A and B is 4:5. If A alone completes the work in 15 days, then in how many days can B alone complete the work? ​

Answer 1

Answer:

Then B being 30% more efficient does 1.3 units per day 3. A completes work in 15 days 4. ... If A and B work together they will complete 1 +1.3 = 2.3 units per day ; So number of days

Answer 2

Answer:

12days

Step-by-step explanation:

ratio of efficiency of A and B = 4:5

ratio of time taken by them to complete work = 5:4

but A can complete it in 15 days

B will complete it in 15/5×4 = 12days

...Resolver Benifit...