Posted by viri on .
mrs. cooper's class has 11 more girls than boys. there are 35 students in all. how many girls are there?
math - sum and difference -
Sum 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
mrs cooper has 35 students in her class. she has 11 more girls than boys. How many girls are in her class.