The bar graph shows the hair colours of the campers at Camp Gauss. The bar corresponding to redheads has been accidentally removed. If $50 \%$ of the campers have brown hair, how many of the campers have red hair?
(A) 5
(D) 50
(B) 10
(E) 60
(C) 25

![](https://cdn.mathpix.com/cropped/2024_04_20_46ead6524a8d61e21c51g-092.jpg?height=545&width=724&top_left_y=2031&top_left_x=1123)
The bar graph shows the hair colours of the campers at Camp Gauss. The bar corresponding to redheads has been accidentally removed. If $50 \%$ of the campers have brown hair, how many of the campers have red hair?
(A) 5
(D) 50
(B) 10
(E) 60
(C) 25

![](https://cdn.mathpix.com/cropped/2024_04_20_748fdafcde2a47412608g-403.jpg?height=583&width=784&top_left_y=207&top_left_x=1126)

## Solution

From the graph, we can see that there are 25 campers with brown hair. We are told that this represents $50 \%$ of the total number of campers. So in total then there are $2 \times 25$ or 50 campers. There is a total of 15 campers who have either green or black hair. This means that $50-(25+15)$ or 10 campers have red hair.

ANSWER: (B)