The histogram gives information about the ages of the 115 members of a social club. 80% of the members who are over 50 years old are female. Work out an estimate for the number of female members who are over 50 years of age.

An estimate of the number of female members who are over 50 years of age is 28 members

Step-by-step explanation:

The covered area art

0 - 20 = 1.6 * 20 = 32

20 - 30 = 1.9 * 10 = 19

30 - 40 = 1.8*10 = 18

40 - 60 = 1.1 * 20 = 22

> 60 = 0.8*30 = 24

Adding together gives;

32 + 19 + 18 + 22 + 24 = 115

The number of members that are 50 years and over is given as follows;

Half of the members in the 40 to 60 range plus all members that are over 60

Which give;

1/2*22 + 24 = 35

Given that 80% of the members over 50 are female, we have that the number of members that are female and over 50 = 0.8*35 = 28 members.

Estimated Value = 28

Step-by-step explanation:

0 - 20 = 1.6 x 20 = 32

20 - 30 = 1.9 x 10 = 19

30 - 40 = 1.8 x 10 = 18

40 - 60 = 1.1 x 20 = 22

60 = 0.8 x 30 = 24

32 + 19 + 18 + 22 + 24 = 115

1/2 x 22 + 24 = 35

50 = 0.8 x 35 = 28

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.