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July 31, 2014

July 31, 2014

Posted by **carol** on Monday, January 21, 2013 at 12:09pm.

A survey of 500 showed the following

15 had only camping

20 had only hiking trails

35 had only picnicking

185 had camping

140 had camping and hiking trails

125 had camping and picnicking

210 had hiking trails

Determine the

a) number of parks that had at least one of the features

b) had all three features

- geometery -
**Steve**, Monday, January 21, 2013 at 3:10pmIf we label the pats of the circles in our Venn diagram,

15+CH+CP+CHP = 185

CH+CHP = 140

CP+CHP = 125

20+CH+CHP+HP = 210

from these we can see that

CH = 45

CP = 30

HP = 50

CHP = 95

a) sum of them all is 290

b) CHP = 95

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