Thread: probability help

please can someone help me with this problem?

the 29 students in a primary school mixed class are all either year 2 students or year three students.
There ar ethe same number of yr two students in the class as as there are boys in the class.
There are 8 yr 2 boys in the class.
the number of yr 3 girls in the class exceeds the number of year 3 boys by 3.
how many yr 3 girls are there in this class?


I already know that I need to use a table for it, but I'm not too sure how to solve it!
any help would be great! thankyou=]

xxx
mariks

Originally Posted by xch3m_is_l0v3x

please can someone help me with this problem?

the 29 students in a primary school mixed class are all either year 2 students or year three students.
There ar ethe same number of yr two students in the class as as there are boys in the class.
There are 8 yr 2 boys in the class.
the number of yr 3 girls in the class exceeds the number of year 3 boys by 3.
how many yr 3 girls are there in this class?


I already know that I need to use a table for it, but I'm not too sure how to solve it!
any help would be great! thankyou=]

xxx
mariks

This has nothing to do with probability so I don't know why you would give your post the title it has.

Solve the following four equations simultaneously for :

.... (1)

.... (2)

.... (3)

.... (4)