In a class of 27 students, if girls are 7 more than boys, how many girls are there?
- 10
- 14
- 17
- 20
Explanation
Let number of boys = x
Then girls = x + 7
Total = x + x + 7 = 27
2x + 7 = 27 → 2x = 20 → x = 10
Girls = 10 + 7 = 17
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