Correct option is C
Given:
The number of pens and pencils sold by three shops (A, B and C).
Solution:
Number of pens sold by shop A = 18
Number of pens sold by shop B = 22
Number of pens sold by shop A and B = 18 +22 = 40
Number of pencil sold by shop C = 16
Difference = 40 -16 = 24










