Store A sold 1/10 of its stock of coffee mugs. Store B sold 1/6 of its stock of coffee mugs. In
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At first, pg means picogram
A microgram is a unit to measure the mass
Then from both relation
Now we can solve the question
Since the average mass per cell is 67.55 pg
Since the number of cells is 10^5
To find the total mass multiply them
We need to change it to microgram, then multiply it by 10^-6
Put a decimal point at the end of the number and move it 6 places to the left to get the answer