A group of 32 students went to the amusement park.All of them either rode the Ferris wheel or Roller coaster.Seventeen rode the Ferris wheel,23 rode the roller coaster,and 8 did both.How many rode only the Ferris wheel
7th grade math - Daniel, Monday, March 7, 2011 at 3:26pm
You need to show a Venn Diagram for this question
7th grade math - Reiny, Monday, March 7, 2011 at 3:47pm
Have you done Venn diagrams before?
Draw two intersecting circles, call then F and R
put 8 in the intersection of F and R.
put 17-8 or 9 in the region of F not intersected.
put 23-8 or 15 in the region of R not intersected.
So counting up what we have:
9 + 8 + 15 = 32 , good!
How many are "only" in the F circle ?
7th grade math - Anonymous, Monday, March 14, 2011 at 7:42pm
The answer to the question is 25 people rode the ferris wheel