Posted by pat on Thursday, January 27, 2011 at 12:27am.
Mr. davison has 30 students in his class . He has four more girls than boys. How many boys are in Mr. Davision class? can you please check my answer? I got 11 boys . does it sound about right ?

5th math  helper, Thursday, January 27, 2011 at 12:30am
x = number of boys
x + 4 = number of girls
x + x + 4 = 30
2x + 4 = 30
2x = 26
x = 13
x = number of boys = 13
x + 4 = number of girls = 13 + 4 = 17
13 boys + 17 girls = 30 
5th math  go suc dick, Monday, October 8, 2012 at 7:25pm
x = number of boys
x + 4 = number of girls
x + x + 4 = 30
2x + 4 = 30
2x = 26
x = 13
x = number of boys = 13
x + 4 = number of girls = 13 + 4 = 17
13 boys + 17 girls = 30