Friday, October 16, 2009

Harvey's Scribepost for October 16

Question 12 and 13

12) In a class of 32 students, there are 24 girls.

A) What is the boys to total ratio? Express the ratio as a fraction and a percent.

It is 8/32 as a fraction
(boys to total) and 25% as a percent.

B) What is the girls to boys ratio? Use ratio notation to express the ratio.

24:8, or 3:1 simplified. (girls to boys)

13) A soccer team played 28 games and won 4 out of every 7 games. There were no tied games.

A) How many games did they lose?
The soccer team lost 12 games. We know that 7x4 is 28 so 7-4 equals 3 and times that by 4 to get 12

B) What was the team's win-loss ratio? Explain your answer.

16:12 or 4:3, We know that the team lost 12 games, so subtract 12 from 28(total games) to get 16 (wins) So it's 16:12. (win to loss)

C) If this trend continues, how many loses would you expect the team to have once they have won 20 games?

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