3. In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base? 3. In Question 2 above how much red pigment should we mix with 1800 mL of base? if 1 part of a red pigment requires 75 mL of base October 12, 2020 Category: Chapter 13 - Direct and Inverse Proportions , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related