Question

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? @Mathematics

Answer 1

2.4hrs

Answer 2

2.4hrs

Answer 3

do u need to know the steps??

Answer 4

yea if you dont mind

Answer 5

sure

Answer 6

see Sally can paint the house in 4 hours
so in 1 hour sally will do how much work ??

Answer 7

i am asking from u

Answer 8

1/4

Answer 9

:)

Answer 10

thanks miks

Answer 11

so similarly john will do 1/6 of work in 1 hour

Answer 12

and if together they will work the total work they will do is
(1/6+1/4) = 5/12 of the work they will complete in one hour
so they will complete the whole work in 12/5 hours
that is 2.4 hrs