Question 902826
1/a+1/b=1/x
1/1+1/2=1/x
1/2+2/2=1/x
3/2=1/x
x=2/3
x=0.66666667 hours working together
check
1/a+1/b=1/x
1/1+1/2=1/x
2/2+1/2=1/x
3/2=1/x
2/3=x
x=0.66666667 hours working together
ok