Question Number: #Mat2198

If Sina can do a job in 4 days that Lisa can do in 6 days and Timmy can do in 2 days, how long would the job take if Sina, Lisa, and Timmy worked together to complete it?

A.) 0.8 days
B.) 1.23 days
C.) 1.97 days
D.) 1.09 days

Answer is option : D

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