Question

In 15 days, the earth pics up 3.3x8times 10 pounds of dust from the atmosphere .how much dust it will pick up in 50 days?

Answer 1

In 15 days, 3.3×8×10 lbs. earth is dug out. So in 1 day = (3.3×8×10)÷15 = 15.6lbs. Therefore, in 50 days--- 15.6×50 = 780 lbs of earth will be dug out. Ans.) 780 pounds of earth will be dug out in 50 days.