Question 47056
New machine = 1x/3
Old machine = x
Together = 8
EQUATION:
{{{1/(x/3)+1/x=1/8}}}
{{{3/x+1/x=1/8}}}
{{{3x+x=((x)(x))/8}}}
{{{4x=x^2/8}}}
{{{32x=x^2}}}
{{{x^2-32x=0}}}
x=0 or x=32
Hence, it would take 32 minutes.
Paul.