Answer:
1,666,667
Step-by-step explanation:
1000 milligrams is equal to one gram.
First, convert the mass of the grain of salt in milligrams to grams by dividing the mass in milligrams by 1000:
[tex]\implies \dfrac{0.06}{1000}=0.00006\; \rm g[/tex]
To calculate how many grains of salt would be in 100 grams of sand, divide 100 g by 0.00006 g:
[tex]\implies \dfrac{100}{0.00006}=1,666,666.6666...[/tex]
Therefore, there are 1,666,667 grains of salt in 100 grams of sand (to the nearest whole number).
