the park department planted oak and maple trees in a 5 to 7 ratio. they planted 360 trees. how many maples did they plant?
7/12 = x/360
Cross multiply and solve for x.
360 is the total of the trees
number of oak trees --- 5x
number of mapes ------ 7x
5x+7x = 360
12x = 360
x = 30
number of maples = 7x = 7(30) = 210
(oaks would be 150, for a total of 360 )
i need help with this... The ratio of oak trees to maple trees in a park is 6 to 4. What percent of the trees in the park are oak trees?
To solve this problem, we need to find the number of maple trees planted.
Given that the ratio of oak to maple trees is 5:7, we can write it as 5x:7x, where x is a common factor multiplying both numbers.
We also know that the total number of trees planted is 360. So we can set up the equation:
5x + 7x = 360
Combining like terms:
12x = 360
Now, divide both sides of the equation by 12 to isolate x:
x = 360 / 12
x = 30
Therefore, each part of the ratio represents 30 trees.
To find the number of maple trees, multiply the maple part of the ratio by x:
7x = 7 * 30 = 210
So, they planted 210 maple trees.