Question

A can dig
of a trench in 1 day, while B can dig of the trench in 3 days. If they work
together. how long will they take to dig the whole trench? ​

Answer 1

Answer:

3/4 th of a day

Step-by-step explanation:

A's 1 day work = 1

B's 1 day work = 1/3

A+B 's 1 day work = 1+1/3 = 4/3

So, Time required to complete the work when A & B work together =

( 1 / (4÷3) ) = 3/4 th of a Day