Question

4. A can do a piece of work in 15 days. B is 50 % more efficient than A. B can
finish the work in number of days :
A 10. B 15/2.
C 12. D. 21/2
5
2nines can fill tank in 10 hour and 12h​

Answer 1

Given,A is 60% more efficient of B Means,A = B + 60% of B.A = 8B5A can complete whole work in 15 days. So,One day work of A = 115One day work of 8B5 = 115One day work of B = 5120 = 124One day work, (A + B),=115+124One day work, (A + B) = 24+15360 = 39360So, Time taken to finish the work by A and B together = 36039

Given,A is 60% more efficient of B Means,A = B + 60% of B.A = 8B5A can complete whole work in 15 days. So,One day work of A = 115One day work of 8B5 = 115One day work of B = 5120 = 124One day work, (A + B),=115+124One day work, (A + B) = 24+15360 = 39360So, Time taken to finish the work by A and B together = 36039 = 12013

Step-by-step explanation:

plz mark as brainliest

Answer 2

Step-by-step explanation:

A can finish the work=15 days

B can finish the work =50/100x15

B can finish the work=15/2

so, option (b) is correct option