Answer:
[tex]Final\ Volume = 29ml[/tex]
Step-by-step explanation:
Given
[tex]Initial\ Solution = 40ml[/tex]
[tex]Change = -11ml[/tex]
Required:
Determine the final volume of the solution
The final volume is calculated as thus:
[tex]Final\ Volume = Initial\ Volume + Change[/tex]
Substitute values for Initial Volume and Change.
This gives
[tex]Final\ Volume = 40ml - 11ml[/tex]
Subtract 11 from 40
[tex]Final\ Volume = 29ml[/tex]
Hence, Betty had 29 ml of the solution