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in a certain school there are 35 more girls than boys. If the total student population of the school is 247, how many are boys?
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Explanation & Answer
b = number of boys
g = number of girls (b + 35) since there are 35 more girls than boys
b + (b + 35) = 247
2b + 35 = 247
subtract 35 from both sides
2b + 35 - 35 = 247 - 35
2b = 212
b = 212/2 = 106
Number of boys 106
Number of girls b + 35 = 106 + 35 = 141
Total number of students should be 247 = 106 + 141 CHECKS OUT
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