Answer:
600 blue spruce trees
Step-by-step explanation:
Let
x-----> the total number of blue spruce trees in the forest
using proportion
36/3=x/50
x=50*36/3
x=600 blue spruce trees
Answer:

Step-by-step explanation:
Add the amounts together:

Convert the whole number 1 into a fraction with denominator 4:

As all the denominators are the same, we can simply add the numerators:


Finally, convert the improper fraction into a mixed number:

To find how long it would take him, one has to divide 400 by 160 and then multiply 5 by what that number is. You multiply 5 by the quotient because that is the number that would make it proportional. 400/160 x 5 is 12.5, meaning that the answer is 12.5 minutes, or A.