Homework Help: 5th math

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

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