1- In a survey of investors it was found that 100 invested in stocks, 60 in mutual funds, and 50 in bonds. Of these, 35 invested in stocks and mutual funds, 30 in mutual funds and bonds, 28 in stocks and bonds, and 20 in all three. Determine the following.
a. The number of investors that participated in the survey.
b. How many invested in stocks or mutual funds but not in bonds?
c. How many invested in exactly one type of investment?
2- In a European country, 20% of the families have three children, 40% have two children, 30% have one child, and 10% have no children. On average, how many children are there to a family?
1
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In a survey of investors it was found that 100 invested in stocks, 60 in mutual funds, and 50 in bonds. Of
these, 35 invested in stocks and mutual funds, 30 in mutual funds and bonds, 28 in stocks and bonds, and 20
in all three. Determine the following.
a
. The number of investors that participated in the survey.
b. How many invested in stocks or mutual funds but not in bonds?
c. How many invested in exactly one type of investment?
2
-
In a European country, 20% of the families have three children, 40%
have two children, 30% have one
child, and 10% have no children. On average, how many children are there to a family?
1- In a survey of investors it was found that 100 invested in stocks, 60 in mutual funds, and 50 in bonds. Of
these, 35 invested in stocks and mutual funds, 30 in mutual funds and bonds, 28 in stocks and bonds, and 20
in all three. Determine the following.
a. The number of investors that participated in the survey.
b. How many invested in stocks or mutual funds but not in bonds?
c. How many invested in exactly one type of investment?
2- In a European country, 20% of the families have three children, 40% have two children, 30% have one
child, and 10% have no children. On average, how many children are there to a family?
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