Question

Person A can complete job in 48min while B can complete the same job in 60min .how long will they take to complete the job toghether?

Answer 1

Answer:

Step-by-step explaination:-

Let the total work be denoted by 1

If in 48 mins A can do 1,

Then in 1min A can do 1/48,

If in 60 mins B can do 1,

Then in 1min B can do 1/60,

In 1 min A+B can do = (1/48 + 1/60)

=(5+4/240)

=9/240

=3/80

3/80 part is done by(A+B) in = 1min

1 is done by (A+B) in = 1*80/3 min

=26 2/3 mins

i.e. =26.67 mins(approx.)

Hope it is helpful to you....