Question

A can do a piece of work in 8 days and B can do it in 6 days. How long will they take to complete it together

Answer 1

Answer:

Step-by-step explantion:

Total work = 24 ( lcm of 8 and 6)

Efficiency of A = 24/8

                        =  3

Efficiency of B = 24/6

                        =  4

Together they complete in,

                     24/7 (Total work/Total efficiency)

                     =3.43 days

Answer 2

Answer:

3 days

Step-by-step explanation:

A complete work in 8 days

so, A complete work in 1 day = 1 / 8

B complete work in 6 days

so, B complete work in 1 day = 1 / 6

thus, together both work = 1 / 8 + 1 /6

so , the

LCM of 8 and 6 = 24

3 + 4 / 24

7 / 24 days

so, A and B take to both complete work = 7 / 24 days