3 items equal 100 dollars so
x + y + z = 100
second is half of first so
y = x/2
third is half the second so
z = y/2 = x/4
so
x +x/2 + x/4 = 100
solve for x
7x/4 = 100
x = 400/7
y = 400 / 14
z = 400 /28
3 items equal 100 dollars so
x + y + z = 100
second is half of first so
y = x/2
third is half the second so
z = y/2 = x/4
so
x +x/2 + x/4 = 100
solve for x
7x/4 = 100
x = 400/7
y = 400 / 14
z = 400 /28