Homework Help: math

Posted by Karl on Wednesday, October 7, 2009 at 11:59pm.

my P.E. teacher asked the 100 seventh graders in my school if they could swim. Half of the boys and two thirds of the girls said yes. Seventeen boys said no. How many seventh graders know how to swim?

math - Don, Thursday, October 8, 2009 at 12:12am
17(2) = 34 amount of boys
100 - 17(2)= 66 amount of girls

1/2 * 34 = 17 boys said yes

2/3 * 66 = 44 girls said yes

44 + 17 = 61 people in total know how to swim

your answer is 61

Answer this Question

Related Questions

Math - Ms. Poole, my PE teacher, asked the 100 seventh in my school if they ...
algebra - There are 384 seventh graders at MArk's school. If there are 48 ...
math - Of the first graders who were asked, one sixth like math best, two thirds...
math - If there are 264 students in a school and there are 84 eighth graders and...
Math - Need help on this question: There are 32 sixth graders and 44 seventh ...
Math - How do I solve this? There are 171 seventh graders eating lunch. This ...
math - mrs loya sponsers the spanish club at central middle school.the club has ...
math - A soccer team consists of girls from sixth, seventh, and eighth grades. ...
math - A soccer team consists of girls from sixth, seventh, and eighth grades. ...
math - there are 80 fourth graders in school of these, 35 were boys. what ...

For Further Reading

First Name:
School Subject:
Answer: