Answer:
880 ml.
Explanation:
We have been given that the formula for glue says to add 55 mL of hardener to each container of resin.
To find the amount of hardener added to 16 containers of resin, we will multiply 55 by 16 as:
![\text{Hardener added to 16 containers of resin}=16* 55\text{ ml}](https://img.qammunity.org/2019/formulas/mathematics/middle-school/col4dk1ghcn0b3dp3phrsnfzxk5jup8dqn.png)
![\text{Hardener added to 16 containers of resin}=880\text{ ml}](https://img.qammunity.org/2019/formulas/mathematics/middle-school/urk78901eaj3pdl3o9rdod16njnqv3vjwt.png)
Therefore, 880 ml of hardener should be added to 16 containers of resin.