1500 people visited an exhibition on Saturday, while 1680 visited on Sunday. The percentage increase in the number of people visiting the exhibition is _______ .

Correct option is C

Given:

​1500 people visited an exhibition on Saturday

While 1680 visited on Sunday.

Formula used:

​$$\begin{align*}\text{Percentage Increase} &= \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \times 100\end{align*}$$

Solution:

Percentage Increase = $$\frac{1680-1500}{1500}\times100$$

​​Percentage Increase = $$\frac{180}{1500}\times100$$

​​Percentage Increase = 0.12 × 100 = 12%

The percentage increase in the number of people visiting the exhibition is 12%.

Thus, correct option is (c)