I know the ratio is 2:3. and the formula is (c+6)(4+b)=25.....most likely
42 inches^2
The formula to find the area of a triangle is (base x height)/2
So, 12 x 7 = 84
and 84 / 2 = 42
The amount of people who do the hurdles:
![\frac{3}{8} \times 40 = 15](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B8%7D%20%20%5Ctimes%2040%20%3D%2015)
From this 15 people, the following amount does long jump:
![\frac{4}{5} \times 15 = 12](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B5%7D%20%20%5Ctimes%2015%20%3D%2012)
So the answer is 12 people.
Answer:
84
Step-by-step explanation:
It's divisible by 3 and 4. 8 is double 4. I did 3*4 which is 12. Then I multiplied it until I found the right answer 12*5=60, 12*6=72, and 12*7= 84.