Suppose you have a bucket of sand containing 5.5 billion grains of sand ( 5.5Γ109 grains). Most of the grains of sand are white, but there are some brown grains mixed evenly throughout. If the concentration of brown sand is 2.0% , how many grains of brown sand are in the bucket?
Accepted Solution
A:
Answer: Β 1.1Γ10^8Step-by-step explanation:2% of 5.5 billion is ... Β 2Γ10^-2 Γ 5.5Γ10^9 = 11Γ10^7 = 1.1Γ10^8About 1.1Γ10^8 grains of brown sand are in the bucket.