# math

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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

• math -

mrs cooper has 35 students in her class. she has 11 more girls than boys. How many girls are in her class.

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