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Fitness survey. Personal fitness Magazine surveyed a group of young adults regarding their exercise programs and the following results were obtained:
3 were using CrossFit, Tae Bo, and Pilates to improve their fitness.
5 were using CrossFit and Tae Bo.
12 were using Tae Bo and Pilates.
8 were using CrossFit and Pilates.
15 were using CrossFit training only.
30 were using Tae Bo.
17 were using Pilates but not Tae Bo.
14 were using something other than these three types of workouts.
a. How many people were surveyed?
b. How many people were using only Tae Bo?
c. How many people were using Pilates but not CrossFit?

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