HourGlass Puzzle

This is also from the AskMarilyn column in the December 2, 2007 Parade Magazine:

Your rich uncle dies, and you're in his will. From his collection of timepieces, he leaves you the 7-minute hourglass and the 11-minute hourglass.

To honor his memory, you open a reflexology salon and use the hourglasses when you give foot massages. But your clients want 15-minute massages instead.

How do you use your cherished timepieces and still manage to please your clients?

Please click here for the answer.