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The average of $5$ consecutive numbers is $N$. If the next three numbers are also added, the average shall
1. Remain unchanged
2. Increase by $1$
3. Increase by $1.5$
4. Increase by $2$
in Others | 41 views

Lets assume the numbers as
$1, 2, 3, 4, 5$
Average = $\frac{15}{5} =3$
$3$ more numbers added
$1, 2, 3, 4, 5, 6, 7, 8$
Average $= \frac{36}{8} = 4.5$
Average is increased by $1.5$
by Junior (685 points)