MCQ
The average of three consecutive even integers is $20$. Then, the integers are:
- A$20, 22, 24$
- ✓$18, 20, 22$
- C$14, 16, 18$
- D$16, 18, 20$
✓
Answer
Correct option: B.
$18, 20, 22$
Let the three consecutive even integers be$- x, x + 2, x + 4$
$\frac{\text{x}+\text{x}+2\text{x}+4}{3}=20$
$\frac{3\text{x}+6}{3}=20$
$3\text{x}+6=60$
$3\text{x}=54$
$\text{x}=18$
So the three numbers are $18, 20, 22$.
$\frac{\text{x}+\text{x}+2\text{x}+4}{3}=20$
$\frac{3\text{x}+6}{3}=20$
$3\text{x}+6=60$
$3\text{x}=54$
$\text{x}=18$
So the three numbers are $18, 20, 22$.
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