Question

if B can finish a piece of work in 12 hours then the amount of work done by b in 4 hours is​

Answer 1

Answer:

1/3

Step-by-step explanation:

B takes 12 hours to do a job

1 hour work of B is 1 / 12

4 hour work of B is 4 × 1 / 12 = 1/ 3.