Friday

April 18, 2014

April 18, 2014

Posted by **Al** on Saturday, April 21, 2012 at 5:29am.

- math -
**Reiny**, Saturday, April 21, 2012 at 8:31amMake a simple chart

....class A......class B

boys .. girls...boys .. girls

3y ...... 3x.......5y .... 2x

we know 3y+3x = 5y+2x

x = 2y

ration of girls to boys in class B

= 2x : 5y

= 2(2y) : 5y

**= 4 : 5**

There is no unique solution , just pick any value for y

e.g. using y = 5, then x = 10 (from x = 2y)

in the chart:

15.. 30....... 25 .. 20 satisfies the condition

y = 8, then x = 16

24 .. 48 ..... 40 .. 32 satisfies the condition

etc.

**Related Questions**

Math - On a math test,12 students earned an A. This number is exactly 25% of ...

maths - On children's day, a teacher brought 63 erasers and 147 sweets to ...

math equation - At east end middle school, twice as many students study spanish ...

algebra - the question says: the yearbook committee is distributing yearbooks to...

algebra - the senior class at highschool a and highschool b planned seperate ...

Math - If the number of male students and female students in each of 3 classes ...

Statistics - A mathematics class has 200 members. If there is 12% absentee rate ...

Maths - A mathematics class has 200 members. If there is 12% absentee rate per ...

math(help) - please help me im completely clueless------------------------------...

math - There are 37 accounting classes with 26 students in each class. Estimate ...