Answer:
10 %
Step-by-step explanation:
We first find change in the quantities
Then we write the change in quantity on original quantity and multiply by 100%
This implies that,
[tex] \frac{11 - 10}{10} \times 100\%[/tex]
[tex] =\frac{1}{10}\times100\%[/tex]
[tex] =10\%[/tex]
Therefore the percentage increase is 10%
