Question 979435
First printer's rate,
{{{R[1]*3=100}}}
{{{R[1]=100/3}}}
Second printer's rate,
{{{R[2]*2=100}}}
{{{R[2]=100/2=50}}}
Together,
{{{(R[1]+R[2])*T=100}}}
{{{T=100/(R[1]+R[2])}}}
{{{T=100/(100/3+50)}}}
{{{T=100/(100/3+150/3)}}}
{{{T=300/(250)}}}
{{{T=6/5}}}{{{hr}}}
1 hr 12 minutes.