19. A box of pencil has 12 pieces . How many pencils are there in all if there are 10 boxes?
A. 100.
B. 102.
C. 112.
D. 120.
20. The grade 4 level has 8 sections. If there are 40 pupils in each section, how many grade 4 pupils are there in all?
A. 280.
B. 300.
C. 320.
D. 360