Question

Can someone explain and help with this!

Answer 1

20.7 mL

Explanation:

There is 56.6 mL of solution in the bottle. 3.2 mL is used up.

This leaves us with 53.4 mL (56.6 - 3.2). Then, half of this amount is used up.

This leaves us with 26.7 mL (53.4 ÷ 2).

Then, 6 mL of this is poured out. This leaves us with 20.7 mL (26.7 - 6).