The fraction of men in a population who are married is 2/3. the fraction of women in the population who are married is 3/5. what fraction of the population is single?
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  7/19 of the population is single

Step-by-step explanation:

First of all, we must make some assumption about the number of married men versus the number of married women. Here, we will assume they are the same number. (Either men are married to women, or the number of gay male marriages is the same as the number of gay female mariages, or both.)

Let m and w represent the numbers of men and women in the population. Then our assumption (above) tells us ...

  2/3m = 3/5w

Multiplying by 5/3, we get

  w = 10/9m

So, the fraction of the population that is single is ...

  (unmarried men + unmarried women)/(men + women)

  ((1 -2/3)m + (1 -3/5)w) / (m + w)

  = (1/3m + 2/5(10/9m) / (m + 10/9m)

  = (3/9 + 4/9) / (19/9) . . . . . let m cancel, simplify fractions a bit

  = 7/19 . . . . fraction that is single

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it