Question

Prakash takes an hour to distribute newspapers in
a block of apartments while his two friends take
80 minutes to do the same work individually. If all
the three distribute newspapers in 2 such blocks of
apartments, how long would they take?​

Answer 1

Answer:

Step-by-step explanation:

let distributing newspaper in one apartment be one unit of work . so efficiency of prakash =1/60 , friend 1 =1/80 , friend 2 =1/80 for 1 apartment , if all three distributes simultaneously, E = 1/60+1/80+1/80 = 1/24 so all three will take 24 minutes to distribute newspapers in one apartment. twice of this time will be required to distribute newpaper in 2 apartments =24*2 = 48minutes.