Tuesday

November 25, 2014

November 25, 2014

Posted by **viri** on Thursday, December 15, 2011 at 8:07pm.

- math - sum and difference -
**MathMate**, Thursday, December 15, 2011 at 9:09pmSum and difference problems can be readily solved without algebra by the following:

bigger number = (sum+difference)/2

smaller number = (sum - difference)/2

Example, since there are more girls than boys, so

number of girls = (35+11)/2 = 23

number of boys = (35-11)/2 = 12

**Answer this Question**

**Related Questions**

math - There are 27 students in Mrs. Reeds class. The number of boys and number...

Math - Mrs coopers 5th grade class has 11 more girls than boys. There are 35 ...

math - Math word problem: There are 25 students in Mrs. Roberts 3rd grade class...

Math - Mrs.Smith's class has 12 girls and 8 boys. What percent of he class are ...

3rd Grade Math - There are 25 students in Mrs. Roberts 3rd grade class. There ...

math - There are 24 students in Mr.Hills class. The number of boys and number of...

Math 156 - The ratio of girls to boys in Mr. Maddox's class of 20 students is 3:...

MATH - In Jessica's art class, the ratio of girls to boys is 3:2. If there are ...

math - In a class of 80 seniors, there are 3 boys for every 5 girls. In the ...

Math - There are 12 girls and 9 boys in Mrs. Johnson's classroom. She said that ...