1 stack of nickels is S=45gm; given that there are 9 nickels on each stack you can
divide the mass of the stack(
45)
by the
number of nickels in a stack(
9) to
find the
mass of 1 single
nickel
<u>5gm = 1 nickel</u>
<span> a=2.5b-11, c=1.5b+1, and a=c so
2.5b-11=1.5b+1
b=12 so a=19 and c=19
so a+b+c=50 </span>