Answer:
900
Step-by-step explanation:
First you need to find the amount of colored copies were made. Then after you multiply by the amount of colored copies made by 9 (9 x 100)
1120
40% of 2800
= 40/100 × 2800
= 4/10 × 28
= 112/10
= 11.2 × 100
= 1120
b