deal of a lifetime

[U chris]

What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?

a river

 

[Kyoto Samurai]

a river

 

[-|Vash|-]

The two sons cross first and one comes back.(100kg cross over, 50 kg come back)

One parent then crosses the river and stays at the other side while the son at that side then comes back. (100kg crosses over, 50 comes back)

The two boys again cross the river together to the other side, and one stays there while the other one comes back alone. (100kg crosses, 50kg comes back)

The remaining parent then crosses alone and the boy at that side, then comes back to fetch the other boy.(100kg over, 50kg back, 100 kg crosses one last time)

 

[Kyoto Samurai]

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

 

[-|Vash|-]

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

The letter 'n'