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_6027bc27089ed4fc493cg-091.jpg?height=551&width=739&top_left_y=1649&top_left_x=1105)
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
(B) 10
(C) 25
(D) 50
(E) 60

![](https://cdn.mathpix.com/cropped/2024_04_20_748fdafcde2a47412608g-410.jpg?height=569&width=770&top_left_y=968&top_left_x=1122)

## 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 there are then $2 \times 25$ 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)