Working together

One worker performs work in 3 days, the second in 5 days. How much do they work together?

Correct answer:

t =  1.875 d

Step-by-step explanation:

t1=3 d t2=5 d  d=1/t1+1/t2=1/3+1/5=8150.5333    t d=1 t 0.53333333333333=1  0.533333t=1  t=158=1.875=158 d=1.875 d

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