Question 918080
1/a+1/b=1/x
1/6+1/8=1/x
8/48+6/48=1/x
14/48=1/x
x=48/14
x=3.42857143 hours working together
check
x/a+x/b=1
x/6+x/8=1
3.42857143/6+3.42857143/8=1
0.57142857+0.42857143=1
1.0=1
ok
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