Question

A can do one fourth of work in 5 days while B can do one fifth of work in 6 days. In how many days can both do it together?​

Answer 1

Answer:

Work = x

A= 1/4 x takes 5 days

B = 1/5x takes 6 days

1/4x + 1/5x = 9/20x

5days + 6days = 11 days

Hence in 11 days , they both can do 9/20 of the work

I hope it helps

Answer 2

Step-by-step explanation:

A can do 1/4 of work in 5 days .

therfore to complet the work is 1/4 / 5/1 which is 1/4 x 1/5 = 20 days .

b can do 1/5 of work in 6days .

therfore to complete the work is 1/5 / 6/1 which is 1/5 x 1/6 = 30 days .

therfore 1/20 + 1/30 = 3/60 + 2/60 = 5/60

therfore 5/60 of work in one day or by ( simplified ) 1/12

therfore 1/12 of the total work in one day .

therfore it will take 12 days to complete the total number of work .

Sorry for reporting your answer