5 grams
Step-by-step explanation:
Given Information :
Mass of a stack of nickels = 45g
No of nickels in a stack = 9 nickels
Mass of one nickel = ?
Let the mass of one nickel be x
[tex]9 \: nickels = 45g \\ 1 \: nickels = xg[/tex]
Cross Multiply
[tex]9x = 45[/tex]
Divide both sides of the equation by 9
[tex] \frac{9x}{9} = \frac{45}{9} [/tex]
Simplify
[tex]x = 5[/tex]
