Question 911155
x time it takes for the second worker to do the job alone
{{{1/5 + 1/x = 1/(10/3)}}}
{{{1/5 + 1/x = 3/(10)}}} |Multiplying thru by 10x so as all denominators = 1
2x + 10 = 3x
10hr = x,time it takes for the second worker to do the job alone