In 25 days, the earth pick up 6*108pounds of dust from the atmosphere. How much dust it will pick up in 15 days.
Dust picked up in 25 days = 6
So , Dust picked up in 1 day =
Therefore,Dust picked up in 15 days =
So , Dust picked up in 1 day =
Therefore,Dust picked up in 15 days =