Answer:
Option C.
Step-by-step explanation:
Two beauticians Lydia and Jackie are working on your hair.
Lydia takes the time to complete the work = 2 hours
Per hour work done by Lydia = 1/2
Jackie complete the work = 1 hour
In one hour total work done by both Jackie and Lydia together = \(1+\frac{1}{2}=1\frac{1}{2}or \frac{3}{2}\)
therefore, time taken by both to complete the work will be = \(\frac{1}{\frac{3}{2} }\) = \(\frac{2}{3}\)
Option C. two thirds is the correct option.
