Jambmaths question:
|
Age |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
|
No of Child |
6 |
x |
16 |
2x – 1 |
15 |
12 |
18 |
The distribution above shows the ages of 120 children. Find the value of x
Option A:
22
Option B:
20
Option C:
18
Option D:
16
Jamb Maths Solution:
$\begin{align} & 120=6+x+16+2x-1+15+12+18 \\ & 120=3x+66 \\ & 3x=54 \\ & x=18 \\\end{align}$
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