Question 425683
Let Sally take 1/4 hours
John= 1/6 hours
Total=1/x
{{{1/4+1/6=1/x}}}
{{{(4+6)/24=1/x}}}
{{{10/24=1/x}}}
{{{x=24/10}}}
{{{x=2.4}}}
It would take them 2.4 hours