SOLUTION: 80% of the red hat society is over 65 years old. 80% of those over 65 years old are also over 75 years old. How many members are over 75 years old if 240 members are between 65 and

Question 1070580: 80% of the red hat society is over 65 years old. 80% of those over 65 years old are also over 75 years old. How many members are over 75 years old if 240 members are between 65 and 75 years old?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = total members of the red hat society
= those over 65 yrs old
= those over 75 yrs old
-----------------------------------------------
given:

and

-----------------------
960 members are over 75
-----------------------
check:
Those under 65:

---------------------
Those 65 - 75:

----------------------
Those over 75:

----------------------

OK

RELATED QUESTIONS
A survey shows that about 70% of those over the age of 65 years old are in danger of... (answered by ikleyn)

1,200 visitors. One fourth of those visitors were over the age of 60. How many people... (answered by addingup)

3. The probability that a person picked at random is over 65 years old is 0.12. If two... (answered by jrfrunner)

Anna is four times as old as Matt, the sum of their ages is 65 years. how old are they (answered by ikleyn,stanbon)

5 In an audience of people watching a film, 1 10 are under 16 years old, 3 5 are... (answered by Alan3354)

A survey shows that about 70 % of those over the age of 65 years old are in danger of... (answered by ikleyn)

Age Male Female Total 0-14 21 28 49 15-64 114 99 213 65 years or over 125 131 256 (answered by Boreal)

Sharon is 38 years old. The sum of the ages of Sharon and Peter is 65. How old is... (answered by ewatrrr)

Eileen is 20 years old. Her grandmother is 65 years old. How many years ago was the... (answered by josh_jordan)