Maths-
SAT
Easy
Question
A survey asked a class of 30 students how many siblings they have. The number of students who have one sibling is 3 times the number of students, n, who have two or more siblings. If 6 students have no siblings, which of the following equations represents this situation?
- 3n + 6 = 30
- 4n + 6 = 30
- 6n + 6 = 30
The correct answer is: 4n + 6 = 30
Total class strength is 30
Number of students having one sibling = 3n
When n is the number of students having two or more siblings
6 students with no siblings
3n + n + 6 = 30
4n + 6 = 30
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