Answer:
The remaining number of the pencil   =  98
The remaining number of the pens  =  192
Step-by-step explanation:
Here, according to the question:
The number of pencils at the starting at the quarter = 100
The percentage of the lost pencil over the year = 2%
Now, calculating the lost pencil, we get:
2% of 100 = 
⇒The number of lost pencil over the year = 2
So,Number of remaining Pencil = Total pencil - Number of pencil lost
                                                        = 100 - 2 = 98
The number of pens at the starting at the quarter = 200
The percentage of the lost pens over the year = 4%
Now, calculating the lost pens, we get:
4% of 200 = 
⇒The number of lost pens over the year = 8
So,Number of remaining Pens = Total pens - Number of pens lost
                                                        = 200 - 8 = 192
Hence, the remaining number of the pencil   =  98
And and the remaining number of the pens at the end of the year  = 192