Math Is Fun Forum

Melllyy

Guest

Venn diagrams

I have to draw a venn diagram with three circles; over 40, glasses and beards

In a group of 70 males, 35 are over 40, 25 wear glasses and 16 have beards.
Five of those wearing glasses also have beards & 3 of these 5 are over 40.
In the group there are 6 bearded males who are not over 40 and who dontwear glasses.

I get it up to there but i dont get the next step. What do I do?

Half of those who were over forty and who wear glasses also have beards

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: Venn diagrams

4 kinds of beards: 6, 2, 3, 5 = 16 total beards
4 kinds of over 40: 3, 3, 5, 24 = 35 over forty.
4 kinds of glasses: 2, 3, 3, 17 = 25 glasses.
Wanna diagram?

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