ExplanationSince the two women are working together, add their rates. To find their individual rates, divide work by time. Never divide time by work! (Also, be careful when dividing the work by \(\frac{1}{2}\).

The rate is the reciprocal of \(\frac{1}{2}\), or 2 tables per hour.)

Find Jenny and Laila’s combined rate, then divide the work required (1 table) by this rate: 1 table ÷ \(\frac{7}{3}\) table per hour = \(\frac{3}{7}\) hour.

Attachment:

image1.jpg [ 60.76 KiB | Viewed 481 times ]
Hence option D is correct!
_________________

Sandy

If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test