Question

if A can do a job in 8 days and B can do the same job in 12 days, how long would it take the two men working together to complete the job?

Answer 1

Lol i just asked that http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4e24d2ce0b8b3d38d3b75c05

Answer 2

5 days

Answer 3

oh haha but thats none of the choices.

a) 3
b) 4.8
c) 10
d) 5.8
e) 6

Answer 4

They used some weird formula to get 5.8

Answer 5

lol i guess im wrong lol

Answer 6

sry

Answer 7

hmm its ok

Answer 8

hmm i got 4.8 but can u post the formula

Answer 9

oh your right it is 4.8, i wrote 5 by mistake.